[diffeomorphism]

So a trivial test that always says "No" will have better accuracy?

https://www.cancer.org/cancer/types/prostate-cancer/about/ke...

> About 1 in 8 men will get diagnosed with that cancer, through their whole lifetime.

So true_negative/whole_population>=87.5% at least (life time vs currently has cancer).

Or am I misunderstanding the meaning?

[greenavocado]

This is why accuracy is useless for reasoning about detection of rare things.