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In information theory, the cross-entropy between two probability distributions {\displaystyle p} and {\displaystyle q} over the same underlying set of events measures the average number of bits needed to identify an event drawn from the set if a coding scheme used for the set is optimized for an estimated probability distribution {\displaystyle q}, rather than the true distribution {\displaystyle p}.

Cross Entropy - Wikipedia

p. 82

Great founders thought five years or more about the problem beforehand Summary: The great successful companies, great founders, almost always have thought deeply about the domain they're operating in for five years or longer. And basically, you ask increasingly detailed questions. If the answers get more and more specific, as the questions get more andmore specific, that's really good. "By the way, OK, by the way, you're also trying to pull one on yourself," he adds. Transcript: Speaker 1 You have to really understand all of the twists and turns that require getting from point A, which is like a vague idea of what you want to do, kind of all the way to point Z on the other side of the maze, which is an actual product that matters that you can build a startup around. And you have to actually think your way through all those steps. And the founders who are good at what they do, think through, they take the time they put in the effort, often years. What I find is it's almost always five years plus. This is not like a short term thing. It's almost always somebody. The great successful companies, great founders, almost always have thought deeply about the domain they're operating in for five years, up and 10 years, up and longer. And basically, you ask increasingly detailed questions. If the answers get more and more specific, as the questions get more and more specific, that's really good. If the answers get more and more in general and more and more fuzz, then it's like, OK. And by the way, OK, you're trying to pull one on us. OK, by the way, you're also trying to pull one on yourself. Yeah, right.

Marc Andreessen on Elon Musk, Good Startup Ideas, How to Have the Courage to Think Independently and Finding a Co-Founder

Aarthi and Sriram's Good Time Show

In evolutionary biology, reciprocal altruism is a behaviour whereby an organism acts in a manner that temporarily reduces its fitness while increasing another organism's fitness, with the expectation that the other organism will act in a similar manner at a later time.

Reciprocal Altruism - Wikipedia

en.wikipedia.org

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