Does this mean that every trade you place must be with the same $100 stop loss and $200+ take profit with every trade? (I know this will change as your account grows/diminishes). Using a 2:1 ratio would mean we can afford to lose twice as many trades than we win in order to breakeven. But this only applies when all your TP and SP levels are set the same as all previous trades. How can you manage risk if you use a smaller position such as $100 TP and 50$ SL or $10 TP and 5$ SL? Or a larger one like $500 TP and $250 SL. One bad trade with a different TP/SL size would ruin the supposed 2:1 ratio of being able to e.g win 100 trades and lose 100 trades and still come out with profit.