Thanks, Bean for your eloquent defence of jargon. I have no problem at all with specialists using specialist language, especially when it gives the proudly omnascient a chance to poke fun. Speaking strictly from my own point of view as a semi-evolved simian, I do think that in the context I saw it used, a non-technical newsletter designed for lay consumption, some consideration ought to have been given to linguistic aesthetics. In that instance, using "compacted" would not have compromised the clairty of communication, and would have been a lot less uglified, resulting in greater happification for me. It's physics, Jim, but not as we know it.