[not_kurt_godel]

> So, to preface this, so we're on the same page, a canary, in the context I'm speaking, is a specific type of comparison between a known good version X, and an unknown version X'.

Ah, that's the issue. You are using what I consider an 'alternative' definition of "canary". The concepts you are referring to are what I would refer to, broadly, as applying to "pre prod" (a term which I think is somewhat misleading and inappropriate itself, but that's what people call it in my circles, so meh). API Gateway, and I presume other entities, uses "canary" the same way, so you are definitely not alone: https://docs.aws.amazon.com/apigateway/latest/developerguide.... I have nits on a few of your points but overall what you're saying is sensible. Glad I understand now! Cheers.