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Explore psychology, finance, mathematics, and AI through guided learning paths. Use the Feynman study lab in every lesson to explain ideas simply, uncover gaps, and test your understanding.
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Showing 89 lessons across 8 subjects
Psychology: mind, brain & behaviour
Beginner path. Start with scientific methods, then perception, memory, development, and social behaviour.
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Self-paced lesson · ~12 min read
Introduction to Psychology: How the Mind Interprets Your World
You receive a message that says, "Fine." Is the sender happy, annoyed, or simply busy? The words alone do not settle the question. Your expectations, recent conversation, and mood help…
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Self-paced lesson · ~8 min read
Science & Research: How to Test What You Think You Know
Why believe that a study technique works? A teacher recommends it, friends repeat it, and it sounds logical. Those are starting points. Research asks a further question: what evidence…
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Self-paced lesson · ~12 min read
Brain: Structure and Functions — A Feynman Guide
You notice a cup, remember that the drink is hot, decide to pick it up, and adjust your grip as it tilts. This ordinary action depends on many interacting systems. Lecture 3 connects…
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Self-paced lesson · ~12 min read
Brain: Methods of Research — How We Know What the Brain Does
A brain image shows activity while someone recognizes a face. Does that prove the highlighted area is necessary for face recognition? No. It identifies an association. To understand what…
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Self-paced lesson · ~12 min read
Vision: How the Brain Turns Light into a Meaningful World
A white mug still looks white when you carry it from sunlight into shade. You recognize it when its circular rim projects an ellipse onto your retina, and you adjust your hand to grasp…
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Self-paced lesson · ~13 min read
Vision II: How We Recognize Objects, Faces, and Words
Imagine seeing a familiar key clearly enough to trace its outline, yet being unable to recognize it until you touch it. Or imagine recognizing a friend's voice but not their face. These…
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Self-paced lesson · ~13 min read
Consciousness: Attention, Awareness, and the Sleeping Mind
You are reading a paragraph when a notification appears. Your eyes keep moving, yet moments later you cannot explain what you read. Meanwhile, your brain has continued regulating posture…
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Self-paced lesson · ~14 min read
Attention: How the Mind Selects, Binds, and Shifts Information
You search a crowded station for a friend in a red coat. A red advertisement catches your eye, your phone vibrates, and someone nearby says your name. Your senses receive more…
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Self-paced lesson · ~16 min read
Memory: How We Encode, Keep, and Reconstruct Experience
You recognize a familiar face but cannot retrieve the name. You remember the meaning of a conversation but confuse its exact wording. You improve at a skill without remembering every…
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Self-paced lesson · ~13 min read
Memory II: Reconstruction, Interference, and the Limits of Perfect Recall
Two people leave the same meeting with different memories of what was agreed. Neither needs to be dishonest. Each noticed different details, connected them with different expectations,…
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Self-paced lesson · ~14 min read
Learning: How Predictions and Consequences Change Behaviour
Your phone sounds, and you anticipate a message before you look. You check it, find something interesting, and become more likely to check again. These are related but different learning…
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Self-paced lesson · ~14 min read
Memory: Amnesia and Memory Systems
Imagine improving at tracing a shape in a mirror while sincerely believing that you have never attempted the task before. The skill has changed, but your recollection of practising has…
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Self-paced lesson · ~13 min read
Language: How Sounds, Signs, and Context Become Meaning
“Can you open the window?” looks like a question about ability, but usually functions as a request. Understanding it requires more than hearing individual sounds: you must identify…
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Self-paced lesson · ~13 min read
Thinking: Problem Solving, Judgment, and Cognitive Flexibility
A solution can be logically simple yet difficult to notice. A familiar tool suggests its usual purpose, a vivid story feels more probable than a broader category, and a previously…
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Self-paced lesson · ~14 min read
Intelligence: What Tests Measure, Predict, and Cannot Explain Alone
Two people can receive the same test score yet differ greatly in knowledge, persistence, opportunities, and everyday judgment. Intelligence testing summarizes some cognitive performances…
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Self-paced lesson · ~13 min read
Emotion & Motivation: How Feelings, Bodies, and Goals Guide Action
Your heart races before a presentation. You could interpret the sensation as excitement, fear, or a mixture of both. Meanwhile, you want to do well, avoid embarrassment, and communicate…
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Self-paced lesson · ~14 min read
Personality: Traits, Situations, and the Patterns That Make Us Different
A colleague is quiet in a large meeting but animated with close friends. Someone keeps careful project records while leaving a cluttered desk. These differences do not automatically…
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Self-paced lesson · ~14 min read
Child Development: How Children Explore, Think, and Learn Together
A baby watches a toy disappear behind a screen. A toddler calls a zebra a horse. A preschooler insists that a taller glass contains more juice. Each response raises the same question:…
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Self-paced lesson · ~13 min read
Adult Development: Changing Abilities, Relationships, and Priorities
An experienced worker may take longer to process an unfamiliar display yet recognize a meaningful pattern that a novice misses. Someone may seek fewer new acquaintances while investing…
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Self-paced lesson · ~13 min read
Stress: How the Body Responds, Recovers, and Adapts
You receive a message about tomorrow's deadline. Nothing is physically chasing you, yet your heart rate rises and you keep rehearsing possible problems. The body can mobilize for an…
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Self-paced lesson · ~11 min read
Psychopathology II: Treatment, Depression, Bipolar Disorder, and ADHD
Two people report poor concentration. One has recently developed persistent low mood and disrupted sleep; the other has struggled with attention across settings since childhood. Similar…
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Self-paced lesson · ~12 min read
Social Psychology: How Other People Shape Judgment and Action
You disagree with a proposal but hear everyone else endorse it. You see a person stumble, notice that nobody reacts, and hesitate. Social psychology asks how other people, group…
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Self-paced lesson · ~10 min read
Social Psychology II: Implicit Associations, Evolution, and Happiness
You reject a stereotype yet find one pairing of words easier than another. You predict that a promotion will transform your happiness, then discover that ordinary concerns return. These…
Markets, bonds & portfolio foundations
Beginner to intermediate. Start with markets and present value; work through bonds and portfolio risk before derivatives.
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Self-paced lesson · ~16 min read
Financial Markets, Financial Terms and Concepts, and Bond Mathematics
The central question is simple: how do we compare money, assets, and risks across time? First understand where trading happens and who trades; then learn to translate future cash flows…
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Self-paced lesson · ~15 min read
Present Value Relations: Cash Flows, Compounding, Inflation, and Bonds
A dollar today and a dollar next year have the same currency label but different economic values. Present value gives us a common measuring date so that we can compare investments,…
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Self-paced lesson · ~17 min read
Fixed-Income Securities: Bond Pricing, Yield Curves, Duration, and Credit Risk
A bond is a contract for dated payments. To understand its value, ask three questions: What payments are promised? What discount factors price those dates? What could change the payments…
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Self-paced lesson · ~16 min read
Equity: Dividend Valuation, Growth Opportunities, P/E Ratios, and Index Futures
Equity valuation connects the money a business can distribute to its owners with the price investors pay today. Growth matters because retained earnings can finance future distributions.…
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Self-paced lesson · ~16 min read
Forward and Futures Contracts: Pricing, Margin, Hedging, and an Introduction to Options
A forward or futures contract lets you agree on a future transaction price today. That can help a business stabilize costs or revenues, or let an investor change market exposure without…
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Self-paced lesson · ~17 min read
Options: Payoffs, Strategies, Replication, and Risk-Neutral Pricing
An option lets its buyer choose whether to transact at an agreed price. That choice changes the shape of the payoff: the buyer can benefit from favorable outcomes while declining an…
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Self-paced lesson · ~15 min read
Risk and Return: Diversification, Portfolio Risk, and the Efficient Frontier
An investment's average return is only part of its story. You also need to know how uncertain that return is and how it moves with the rest of your portfolio. An asset that looks risky…
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Self-paced lesson · ~15 min read
Portfolio Theory: Markowitz Optimization, CAPM, Beta, Alpha, and Capital Budgeting
Portfolio theory begins with a choice: how should an investor combine uncertain investments? CAPM adds an equilibrium question: if investors make those choices together, what expected…
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Self-paced lesson · ~17 min read
The CAPM and APT: Beta, Alpha, Factor Risk, and No-Arbitrage Pricing
Two investments can have the same volatility and still require different expected returns. The important distinction is which risks remain when investors combine assets into portfolios.…
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Self-paced lesson · ~18 min read
Linear Rates, Products, and Models: SOFR, Swaps, Yield Curves, and Hedging
Interest-rate markets connect today's money to future cash flows. Their basic products—deposits, bonds, futures, and swaps—provide the prices used to construct yield curves and hedge…
Corporate finance & valuation
Intermediate. Prerequisites: present value and risk/return. Build from investment decisions to company valuation.
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Self-paced lesson · ~17 min read
Capital Budgeting: NPV, Incremental Cash Flows, Project Risk, and Real Options
Capital budgeting decides which long-lived investments a firm should undertake. The central question is whether the future benefits are worth more today than the resources committed.…
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Self-paced lesson · ~17 min read
Efficient Markets: Information, Price Discovery, Behavioral Finance, and Adaptive Markets
If a piece of information seems to imply an easy investment profit, ask why the current price has not already adjusted. That question is the practical starting point for market…
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Self-paced lesson · ~18 min read
Capital Structure: Modigliani–Miller, Tax Shields, Distress, and Financing Incentives
A company can finance the same factory with more debt or more equity. Does changing that financing mix create value, or merely redistribute the factory's cash flows and risks?…
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Self-paced lesson · ~19 min read
Informational and Dynamic Considerations: Financing Signals, Financial Slack, and Agency
A financing policy must do more than identify an attractive debt ratio today. It must preserve the ability to fund tomorrow's investments when cash flows, valuations, and credit…
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Self-paced lesson · ~17 min read
Financing and Capital Structure: Forecasting Funding Needs and Choosing a Financial Policy
A financing decision should begin with an operating plan, not a preferred security. Forecast what the business must own, what it will earn, when payments fall due, and which investments…
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Self-paced lesson · ~18 min read
Case Intel Corporation, 1992: Investment, Liquidity, Payouts, and Contingent Financing
Intel's financing problem is not simply whether a profitable company should distribute cash. It is how much liquidity an innovation-driven manufacturer can distribute without weakening…
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Self-paced lesson · ~16 min read
Valuation of Free Cash Flows: Operating Forecasts, Reinvestment, Terminal Value, WACC, and APV
Free cash flow connects a business's operating economics to its value. It asks how much cash the operations generate after taxes and necessary reinvestment, before deciding how debt and…
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Self-paced lesson · ~15 min read
WACC and APV: Project Discount Rates, Debt Policy, and Financing Tax Shields
WACC and APV ask the same valuation question: what are the operations worth after financing effects are accounted for? WACC incorporates those effects through a discount-rate framework.…
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Self-paced lesson · ~16 min read
Real Options: Valuing Waiting, Growth, Staged Investment, and Abandonment
A project forecast is incomplete if it assumes managers must follow the same plan regardless of what they learn. A real-options analysis values the ability to change that plan: wait,…
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Self-paced lesson · ~15 min read
Valuing a Company: DCF, Terminal Value, EVA, and Multiples
A company is worth the cash it can generate for its capital providers. Valuation turns that idea into a disciplined set of forecasts: how much cash, when it arrives, what investment it…
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Self-paced lesson · ~16 min read
Valuation: Connecting Cash Flows, Financing, Flexibility, and Market Prices
Valuation asks a practical question: what future economic benefits justify paying money today? A useful answer connects the business plan to cash flows, risk, financing, and the choices…
Mathematics for finance
Intermediate. Linear algebra and probability prepare you for regression and stochastic models.
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Self-paced lesson · ~18 min read
Linear Algebra for Finance: Vectors, Replication, Markov Chains, and PCA
Linear algebra studies vectors, linear transformations, and systems of equations. In finance, these become portfolios, scenario payoffs, transition models, and risk factors. The same…
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Self-paced lesson · ~15 min read
Probability Theory for Finance: Distributions, Limit Theorems, CAPM, and Martingales
Probability theory turns uncertainty into a model we can reason about. In finance, it helps describe defaults, measure portfolio risk, estimate average returns, and price contingent…
Statistics, data science & AI
Move from regression and time-series models to machine learning and financial applications of AI.
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Self-paced lesson · ~17 min read
Regression Analysis for Finance: OLS, Inference, Robust Methods, and Regularization
Regression connects an outcome to explanatory variables. In finance, it can estimate market exposure, explain credit spreads, or predict returns. The central question is which…
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Self-paced lesson · ~16 min read
Regression Analysis II: Hypothesis Tests, Structural Breaks, and CAPM Regimes
A regression coefficient describes a relationship in a model. Hypothesis testing asks whether the data are compatible with a specific restriction on that relationship. Structural-break…
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Self-paced lesson · ~17 min read
Regression Analysis III: Stationarity, Autocorrelation, and ARMA–ARIMA Models
Ordinary regression relates an outcome to predictors. Time-series modeling also asks how the past predicts the future and whether that relationship remains stable through time. A trend,…
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Self-paced lesson · ~17 min read
Time Series Analysis: Likelihood, Unit Roots, Seasonality, and Volatility Forecasts
A time-series model can fit a financial series well while answering the wrong forecasting question. A rolling volatility measure, for example, is partly predictable because most of its…
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Self-paced lesson · ~16 min read
Principal Component Analysis in Finance: Yield-Curve Factors, Hedging, and Relative Value
Hundreds of financial series can share a few major sources of variation. Principal component analysis (PCA) finds directions that summarize that variation. In rates, those directions…
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Self-paced lesson · ~19 min read
Artificial Intelligence in Finance: Recent Advancements, Challenges, and Future Directions
The adoption of artificial intelligence (AI) in financial services is accelerating. Industry surveys indicate that the proportion of finance professionals using AI grew from 37% in 2023…
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Self-paced lesson · ~18 min read
Machine Learning for Finance: Validation, Neural Pricing, and Reinforcement-Learning Hedges
Machine learning fits patterns from data to support predictions or decisions. In finance, a model can estimate a return, approximate an expensive pricing engine, organize risk exposures,…
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Self-paced lesson · ~17 min read
Neural Networks and Deep Learning: Training Deep Neural Networks
A neural network learns a prediction rule by adjusting weights and biases. A deep network composes several transformations, allowing it to learn useful intermediate representations as…
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Self-paced lesson · ~16 min read
Training Deep Neural Networks: Keras, TensorFlow, and Tabular Data
Training a neural network means turning a mathematical prediction rule into an experiment: prepare the data, choose an objective, update parameters, and measure performance on unseen…
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Self-paced lesson · ~17 min read
Deep Learning for Computer Vision: Building Convolutional Neural Networks from Scratch
Images contain structure: neighboring pixels form edges, edges combine into shapes, and shapes help identify objects. A convolutional neural network, or CNN, builds that structure into…
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Self-paced lesson · ~16 min read
Deep Learning for Computer Vision: Transfer Learning, Fine-Tuning, and Hugging Face
Training every visual feature from random initialization can be wasteful when you have only a few hundred labeled images. Transfer learning starts from representations learned on another…
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Self-paced lesson · ~16 min read
Deep Learning for Natural Language: The Basics
Text carries explanations, opinions, stories, instructions, and conversations. Natural language processing, or NLP, turns this unstructured material into representations that…
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Self-paced lesson · ~17 min read
Deep Learning for Natural Language: Word Embeddings
A word ID tells a model which token it has encountered, but says nothing about what that token means. Word embeddings replace isolated token indicators with learned dense vectors. This…
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Self-paced lesson · ~15 min read
Deep Learning for Natural Language: Transformers
A static embedding gives a token one vector. A Transformer combines token representations with information about their positions and surrounding tokens, producing a contextual state at…
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Self-paced lesson · ~14 min read
Deep Learning for Natural Language: Transformers and Self-Supervised Learning
A Transformer specifies how token representations interact. A learning objective specifies what those interactions should help predict. Self-supervised learning connects the two by…
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Self-paced lesson · ~15 min read
Generative AI: Large Language Models and Retrieval-Augmented Generation
A language model can produce fluent answers from patterns learned during training, but an application often needs information that is private, recent, or too extensive to fit in one…
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Self-paced lesson · ~15 min read
Generative AI: Adapting LLMs with Parameter-Efficient Fine-Tuning
Adapting a large language model can mean changing its instructions, supplying external evidence, or training parameters for a target task. Parameter-efficient fine-tuning, or PEFT, makes…
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Self-paced lesson · ~18 min read
Applying Data Science and Artificial Intelligence to Managing Biomedical Portfolios
A promising biological discovery is not yet a medicine, and a promising medicine is not yet a financeable investment. Biomedical portfolio management connects scientific evidence,…
Stochastic processes & pricing
Explore random processes, stochastic calculus, option pricing, and volatility step by step.
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Self-paced lesson · ~15 min read
Stochastic Processes for Finance: Martingales, Stopping Times, and Markov Chains
A stochastic process is a collection of random variables indexed by time. A price at one date is a random variable; its evolution across dates is a process. The central questions are:…
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Self-paced lesson · ~15 min read
Stochastic Processes: Brownian Motion, Diffusion, and Hitting Times
Brownian motion is the continuous-time reference model for accumulated small random shocks. It connects random walks, diffusion equations, barrier events, statistical tests, and…
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Self-paced lesson · ~13 min read
Stochastic Calculus: Itô Integrals, Itô's Formula, and Stochastic Differential Equations
Ordinary calculus integrates against time or sufficiently regular paths. Brownian paths are continuous but too irregular for the usual pathwise rules to apply unchanged. Stochastic…
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Self-paced lesson · ~10 min read
Stochastic Differential Equations: Black–Scholes, Heat Kernels, and Mean Reversion
A stochastic differential equation (SDE) specifies how a state changes through a predictable drift and unpredictable shocks. Solving it gives an entire random trajectory, rather than one…
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Self-paced lesson · ~14 min read
Black–Scholes Formula and Risk-Neutral Valuation: Replication, PDEs, and Pricing
An option's payoff is uncertain, but a portfolio can sometimes reproduce that payoff state by state. If so, the option and its replicating portfolio must have the same price in an…
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Self-paced lesson · ~17 min read
Volatility Modeling: OHLC Estimators, EWMA, GARCH, and Implied Volatility
Volatility describes the scale of uncertainty in a specified financial variable over a specified horizon. Estimating past volatility, forecasting tomorrow's conditional variance, and…
Portfolios, risk & market design
Connect theory to allocation, collateral, market structure, and the evolution of asset management.
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Self-paced lesson · ~13 min read
Real Estate Economics: Rents, Prices, and the Four-Quadrant Model
A building does two jobs: it gives someone a place to live or work, and it gives its owner an asset that can earn income. Real estate economics connects those jobs. Tenants compete for…
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Self-paced lesson · ~16 min read
The Urban Land Market: Location, Rents, and Prices
Why does a home near the city centre cost more than an otherwise identical home farther away? One explanation is that the central home saves its resident time and money on travel. Urban…
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Self-paced lesson · ~14 min read
The Urban Housing Market: Structures, Attributes, and Density
A developer owns one piece of land. Should it hold a few spacious homes or a taller building with many smaller apartments? Buyers may pay more for space and privacy, but land is scarce…
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Self-paced lesson · ~13 min read
Firm Site Selection and Industrial Land Use
A barber, a factory, and a warehouse can all employ local residents, yet choose very different sites. The barber needs customers to reach the shop. The factory needs workers and supplies…
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Self-paced lesson · ~12 min read
Employment Decentralization and Edge Cities
If suburban land is cheaper and workers already live nearby, why would a firm pay to stay downtown? And if leaving downtown saves money, why do firms build suburban clusters rather than…
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Self-paced lesson · ~15 min read
Retail Location and Market Competition
Why is there a small grocery shop near your home but a large shopping centre farther away? Why do competing clothing shops gather in one mall? And why might its largest tenant pay less…
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Self-paced lesson · ~13 min read
Local Governments, Property Taxes, and Real Estate
A home comes with more than walls and a location. Buying it also buys access to local services and a responsibility to help pay for them. A good school system can make a home more…
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Self-paced lesson · ~15 min read
Public Goods, Externalities, Development, and Regulations
A developer can earn more by adding another floor while making neighbouring homes darker. A neighbourhood can value a park more than its purchase price while no resident wants to pay for…
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Self-paced lesson · ~15 min read
Housing Markets: Turnover, Prices, User Cost, and Supply
A city can gain very few new households while millions of existing households move, buy, sell, or change tenure. A house can also become more expensive to purchase while appearing…
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Self-paced lesson · ~14 min read
Commercial Markets: Absorption, Leases, Offices, Industrial, Retail, and Hotels
A full office building, a busy warehouse, and a sold-out hotel all use space, but their demand drivers and adjustment speeds differ. An office tenant may commit for years; a hotel sells…
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Self-paced lesson · ~17 min read
Portfolio Management: Allocation, Rebalancing, Liquidity, and Position Sizing
Portfolio management turns investment ideas into positions that can survive uncertainty. Choosing a promising asset is only part of the task: how much to own, how to finance it, when to…
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Self-paced lesson · ~19 min read
Counterparty Risk Optimization: Collateral, Risk Measures, and Margin Networks
Two portfolios can have the same aggregate market exposure but very different collateral requirements. The difference comes from where trades sit: across counterparties, enforceable…
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Self-paced lesson · ~17 min read
Building a CFTC-Regulated Event Exchange: Kalshi, Market Design, and Event Risk
An event exchange turns a precisely defined future outcome into a tradable payoff. Building one requires much more than a forecasting website: contract language, order matching,…
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Self-paced lesson · ~14 min read
Digital Transformation in the Asset Management Industry: Trends, Technologies, and Future Outlook
Research Report — 2025
Entrepreneurship & business strategy
Understand venture valuation, financing contracts, IPOs, and strategic decisions.
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Self-paced lesson · ~7 min read
New Venture Valuation Explained - Key Methods & Strategies for Startup Success | Entrepreneurial Finance
Welcome to our first lecture on Entrepreneurial Finance, where we'll focus on the valuation of new ventures. Unlike established companies, new ventures face unique challenges that…
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Self-paced lesson · ~6 min read
Venture Capital Contracts Explained | Key Terms Every Entrepreneur & Investor Must Know!
Welcome to today's lecture on Venture Capital (VC) Contracts. In this session, we will explore the intricate mechanisms that underpin venture capital financing, focusing on the key…
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Self-paced lesson · ~5 min read
Mastering Venture Capital Contracts - Key Terms Every Entrepreneur and Investor Must Know
Welcome to today's lecture on Venture Capital Contracts, where we will delve deeper into some of the crucial aspects of these contracts. Building on our previous discussion, we'll…
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Self-paced lesson · ~5 min read
Guide to IPOs - Understanding the Costs, Process, and Market Trends
Welcome to today's lecture on Initial Public Offerings (IPOs). Our discussion will focus on why firms decide to go public, the costs and steps involved in the IPO process, and the…
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Self-paced lesson · ~14 min read
Strategic Business Decisions: Making Better Choices, Faster — An Evidence-Based Synthesis
Strategic decision-making sits at the intersection of cognitive psychology, organizational behavior, and competitive strategy. In volatile environments, the quality and speed of…
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