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Comment by chiefalchemist | Hacker News Reader

Perhaps it falls under biases but I'm surprised he didn't mention: Know when to quit. Or more precisely: Define your exit points and stick to them.

That is, we all have a tendency to double down on bad decisions (as things go sideways). Or we get greedy as things go well and hold longer than we should.

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Looks like it was under temperament:

"Some people are able to remain rational and continue to follow their process even under great duress or during periods of external upheaval. Others get swept up in the emotion that typically runs amok during such circumstances, and abandon their discipline."

On that note, what’s the easiest way to build a personal trading bot? Something in a simple language, that I can still nacktest perhaps stock and options.

There isn’t - you are competing against big bank trading bots in a world where the best bots win.

Nah. If you have a bot that invests 10K, and has a reaction time of a minute, and invests in 10-100 equities with, say a couple of months each time, then you are in a completely different world than big bank bots. Its like Warren said, its easy to invest a million.

It's easy to invest a million in some index fund, but it's not easy to beat the market.

Obviously nobody should trade cryptocurrencies, but cryptocurrency exchanges tend to have unusually equitable market access for solo quants compared to US equities or whatever.

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