[Someone1234]

It tells you the intent. The actual code does exactly that, because the intent matches the code, but sometimes the two aren't aligned and therefore the "redundant" comment can help you determine if the bug is the code or the intent.

Understanding the "Why?" of code is often the most valuable thing about comments. The code remains forever, but the "Why?" is often lost to time.

[cjfd]

Except that it does not. The 'why' would be explaining why the jit needs to be enabled to be able to load. As it stands it explains the 'what' and therefore is a bad comment.

[Someone1234]

A point well made. I conceded it could have been better written.

I still believe "redundant" comments can be of value though. This just may not be the best example.

[ssambros]

> It tells you the intent.

A good unit test that tries to load with jit_enable=false and expects false in return will communicate intent even better.