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Small-Scale Question Sunday for November 13, 2022

Do you have a dumb question that you're kind of embarrassed to ask in the main thread? Is there something you're just not sure about?

This is your opportunity to ask questions. No question too simple or too silly.

Culture war topics are accepted, and proposals for a better intro post are appreciated.

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Shouldn't the phrase "{low/high} {risk/reward}" also include {high/low probability} ?

Else buying lottery tickets sounds like a "low risk, high reward" good idea. Or is the risk/reward an expected value?

Modern risk theory holds that Risk = Likelihood (probability) x Consequence.

Probability is already factored into risk.

"In simple terms, risk is the possibility of something bad happening." - Wikipedia.

I don't know why I found that funny.

Ironically enough, its also the chance of good happening with a subset of risk theory called positive (opportunity) risk.