Hmmmmm. Not sure I understand the question properly ...
Simplest form, I guess expectation is "You pay the bills, I'll do the laundry". It doesn't become a condition until you say "I just got a late notice in the mail, so good luck finding clean underwear" as opposed to "I just got a late notice in the mail, what's up with that?".
Or, "You need to have deep philosophical discussions about the nature of God and the universe and I need to have lots of hot monkey sex." (as in my relationship) It's tempting to turn my stated expectation into a condition (you haven't initiated in over a week; quantum mechanics, duh what?) but that does feel somewhat petty and vengeful and I can never really justify it to myself.
Not sure that's what you meant ....
"Show me a completely smooth operation and I'll show you someone who's covering mistakes. Real boats rock." -- Frank Herbert
