No lah I not so zai. I learn from algo mistake so I am fully manual.
If you are a swing trader martingale is a good method if you can use it to your advantage. Algo will probably burst your account using martingale because they cannot see the chart.
Martingale is never good for any trading strategy.
This is a gambler's tactic that usually get people into deed debt.
Why is martingale so dangerous?
Because martingale give you a false assumption that you in an advantage, but in actual fact you are not.
Flipping a coin 99 times and all turn up "tail". Flipping the coin the 100th time, the chances of the coin turning up "head" is still 50%, not 99%. Only a gambler will think the chance is 99% and bet big.
This is how gamblers get into more debt because during a losing streak, they always think the next bet is their lucky break and they double down; and this usually fail them.
As traders, we knows that the market can stay insane longer than one can stay sane, so we are not going to take the chance of doubling down.
In fact, traders do the opposite, we do anti-martingale. We add-on when marketing is good to us and we are in a winning streak; not the other way round.