> I'm talking about the behavior of the one_for_one supervisor: Oh, sure, you can vary the ID in non-'simple_one_for_one' supervisors there to make that work.

> I'm talking about the behavior of the one_for_one supervisor: Oh, sure, you can vary the ID in non-'simple_one_for_one' supervisors there to make that work. Apologies for inducing you to write out all that transcript and code. But, OP's claim was: > - a lot of knowledge is implicit (try checking if you can dynamically add children to a Supervisor) which is just not fucking true no matter how you slice it. It's true that the relevant documentation doesn't literally say "Calling 'start_child/2' is valid for any kind of 'supervisor'. That's why it's here... to dynamically add children to a 'supervisor'.", but if one bothers to read the docs on supervisors and the function in question it's clear that that's the entire point of 'start_child/2'.