[redpenguin101]

> The site should ask for the language used to solve the problem and then use this as semi-scientific data for comparing "time-to-solution" for various languages.

I can't believe any valid causal inference about languages could be drawn from this, because the skill of the individual programmer at solving these types of puzzles (recognizing the patterns, knowing the number theory, etc.) would surely dominate any impact of the language itself.

I suppose you could conclude something along the lines of "newer programmers use Python more often than Haskell", but I doubt there would be many surprises there.

[nonameiguess]

It would work if language to programmer mapping was largely random with respect to skill level, or randomly assigned languages to use rather than giving the programmers a choice, but then you'd also need to give six months notice or something to learn the assigned language if they didn't already know it.