1
Why 90% of Backtests Lie
The gap between backtest fantasy and live trading reality
10 min
2
Lookahead Bias: The Silent Killer
Accidentally using future data to predict the past
12 min
3
Overfitting: Curve Fitting the Past
When your strategy memorizes noise instead of signal
11 min
4
Walk-Forward Validation
The technique that separates hobby backtests from institutional testing
12 min
5
Sample Size: How Many Trades Is Enough?
Why your 10-trade win rate is meaningless
10 min
6
Metrics That Matter (And Ones That Don't)
Win rate is vanity, profit factor is sanity, Sharpe is reality
12 min
7
Stress Testing: Monte Carlo and Beyond
Will your strategy survive a black swan?
11 min