Sandman
I don't care how you think he "used" the term. A non-destructive workflow is a reversible process in every sense of the term.

Eric Stevens
I *know* how he used the term and I have already explained in detail. A non-destructive work flow is not a fully reversible process.

Say I have a bomb, and cause it to explode. If I then with superhuman speed capture all the escaping gases and stuff them back into the ruptured casing, and then slam the casing shut, I might be said to have fully reversed the process. (In fact, that would not be correct in thermodynamic terms).

Say I have another bomb and after I have exploded the first bomb I put the second bomb in it's place. It might now look as if the first bomb had never explodedbut I have not reversed the changes to the first bomb: I have merely substituted for it.