I noticed that most backtesting examples use $100K for initial capital, but doesn't it invalidate the test result? Most of us do not have that kind of money, much less committing it in a single strategy, so we will use a much less amount in live trading. The problem is that many position sizing methods use drawdowns in dollar terms from backtesting. If you got a maximum drawdown of, say, $20K with a $100K account in backtesting, then you could use that maximum drawdown value when your account actually had 100K. Does this mean you that should backtest with initial captial that is close to what you have in your account? Thanks!