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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?

The reward is typically an expected value, as far as I know. So the lottery is low risk, low reward because the likelihood of a payout is quite low.

Yeah brainfart on my side. Winning the lottery is low risk high reward, not buying a ticket