Touch the math.
Short, free, no-signup tools to test the statistics behind the indicators. Drag the inputs and watch the numbers move — because a claim you can check beats a claim you have to believe.
Edge or noise?
A 75% win rate on 12 trades tells you almost nothing. Drag the wins and losses and watch how much — or how little — your sample can actually prove.
How long a losing streak is normal?
Even a real, winning edge goes cold for stretches. Set your edge, run a trader, and watch how many losses in a row happen by pure chance — before you blame the system.
How far can it travel?
Drag drift and volatility and watch a Monte-Carlo cone of where price could land — and why the tails are fatter than the textbook says.
Does the regime matter?
Split the same signal by trend vs chop and see the win-rate move — the difference between a tool that works everywhere and one that only works sometimes.
The overfitting trap
Try enough settings and one always looks brilliant. Watch a "great" backtest appear from pure noise as you crank up the number of tries.