The MRIs can tell how much brain tissue can be saved, and those patients with irreversible damage don't get the drug.

FORBES: Brain Repair

We can't afford to have a cut result in irreversible damage to our industrial base.

CENTERFORSECURITYPOLICY: Doing in defense

The concern is that one doesn't want to do anything that's irreversible and then have them in a position where they're not happy.

BBC: Richard O'Brien: ��I'm 70% man'

With all that as the backdrop, feeding polar bears doesn't sound so crazy, however sad and potentially irreversible it may be.

CNN: Don't feed the (polar) bears