REALITY is what makes the past immutable.

And reverting a patch DOES NOT CHANGE HISTORY. It does not magically go back in time and say "nothing happened". Every time you say that "reverting a pacth is a no-op", you look more and more stupid, because you don't seem to understand this fundamental fact.

If you think that "stable" means "bug free", you are fundamentally confused about software engineering.

If you think you can go back in time and "undo" things, you are even more fundamentally confused about reality.

And if you cannot understand what tens of people have tried to explain to you, you are just f*cking stupid.
--Linus, 3.3.2 stable release mailing list