๐ฌ
Backtesting & system validation
Running historical tests, avoiding overfitting, walk-forward testing, not deceiving yourself with cherry-picked parameters
๐ง
Trading psychology โ Part II
Managing real-money loss, overconfidence after wins, following the system when it's losing, journaling practice
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Transaction costs, taxes & account rules
PDT rule, short-term vs. long-term capital gains, commissions & slippage, margin requirements โ all of which eat trend-following returns
๐
Macro environment & strategy fitness
Identifying when your system is likely to underperform; adapting position sizing (not rules) to regime; distinguishing bad luck from bad process
Instructor note: The PDT rule alone will shock most beginners โ surface it early rather than at the end. For backtesting, the real lesson isn't mechanics: it's building the habit of asking "Am I fooling myself?" before committing real capital to a system.