I was thinking of dismemberment/amputation as well.

Really, I believe everything we do has some form of permanence. There is no going back: time runs one-way.

This is not to say that we can't learn from our mistakes or that we cannot grow or become better people. I believe that we all have that capability to some extent. It is a core tenet of mine.

But I had a music teacher say once about playing a wrong note, once it's done, it's out there -- there's no going back.

I believe it is true of everything. Good or bad.