The sample confusion

[stevekrouse]

I conceptually understand how sample solves the hot and cold observable problem, but I don't have a strong in-my-bones intuition for it yet. Part of my confusion is that I don't see any alternative for "the first moment in time" of when to start accumulating. Isn't it always "when the code runs"? When would we want a delayed accumulation time?

What might solve this confusion for me is to show how sample allows us to model both hot and cold observables.