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Author user:1234
user:me (yours)
Score score:3 (3+)
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answers:0 (none)
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Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
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wiki:no
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Search options not deleted user 14955

Questions designed to generate a "big list" of certain results, examples, conjectures, etc. via many individual answers, each contributing one or a few instances. Such a question should typically be in Community Wiki mode (CW); after asking, please, flag for moderators attention requesting the question to be made CW.

4 votes

Colloquial catchy statements encoding serious mathematics

There's no such thing as a free lunch. This refers to the No Free Lunch theorem. The theorem states that it's impossible to develop a search optimization algorithm that works well for all possible pr …