Seejay: Hmm, I don't see how I'm using the term in two different ways. By 'calories' I mean 'energy'. The fact that CI affects CO doesn't change the fact that CO needs to be greater for one to lose weight.

I have to say -- I already had a sense prior to this thread that CI/CO was a sensitive issue in the LC community, as we're all sick of the "eat less exercise more" nonsense spewed by the supposed experts. But I see now that I wasn't aware of the full extent of it, or that CO is often meant to only mean "exercise". (Which still amazes me in an LC forum. I could maybe undestand it in an LF forum.) So this has been a learning experience indeed.