Very often in mathematics and related sciences the motivation of a concept is helpful or even fundamental for its understanding. Obviously, this motivation has two origins: a historical one, and a technical one. For this reason, a question asking about the origin or motivation of a concept could fit, more or less, either into hsm.se and math.se, physics.se, etc. What should we do about this?
This question came to mind because of this question: Why is the Dirac delta "function" often presented as the limit of a Gaussian with a fraction in the exponent? which in my opinion doesn't belong in hsm, but in math.
I'd like to discuss what to do about the general case, and also what should be done about the particular example.