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Lessons

Every short video we publish gets a page here - the video, a written breakdown, and the deck to actually learn it.

Why Your Savings Account Loses Money

nominal vs real return; the silent negative yield

How Experts Remember More Without Trying

chunking, schema, why context beats raw memory

Why Your First Mortgage Years Are Almost All Interest

amortization schedule, the front-loaded interest shape

Why You Feel Ready And Then Fail

fluency illusion, judgement of learning, calibration

APR vs APY And Why It Matters

compounding frequency; the same rate quoted two ways

What Sleep Does To What You Learned

consolidation, why the all-nighter costs more than it buys

How Index Funds Actually Work

owning the whole market, fees compounding against you, why most active funds lose

Why Studying One Topic At A Time Backfires

blocked vs interleaved practice; discrimination between problem types

How Big Should An Emergency Fund Be

months of expenses not income; where to keep it; what it is not for

Why Testing Yourself Beats Studying

retrieval practice as the learning event, not the measurement

How Credit Card Interest Really Works

APR to daily periodic rate, grace period, why paying minimum is a trap

Why Cramming Fails The Week After

massed practice looks efficient, decays fastest; spacing and interleaving

What Diversification Actually Protects You From

idiosyncratic vs market risk; what it cannot save you from