[paiute]

Tell me how an exception works. I’ve seen bugs caused by people not understanding the underlying mechanism. It doesn’t mean one shouldn’t use them.

[saulpw]

Specifically you said "it doesn’t really matter if you understand the code"...the literal code under review. Not the underlying mechanism of an abstraction you're using, which is useful, sure, even if you don't understand how it works under the hood. If you're reviewing the code that implements an abstraction, you better damn well understand how it works under the hood.