For context: Your "use case" should be, there's a 22 year old college student living in the dorms. How will this software get him laid? http://www.jwz.org/doc/groupware.html

If all you had to do to get laid was obtain condoms my high school years would've gone quite differently

Just because there are circumstances where presence of a condom makes the difference doesn't mean it does so in every case; the app would still get some people laid (and keep other people safer).

"necessary but not sufficient"

That's what people's behavior should be, when they are having sex outside a long-term, tested, monogamous relationship... It doesn't translate perfectly into reality.

That's the opposite of what rational behavior should be. Always condoms until the 6th month of a relationship, then without only after test results come back.

That sounds like what I said, though I didn't spell out specific parameters on what was meant by "long-term, tested, monogamous relationship".

If one is going to be having sex outside of such a relationship (by which I had meant "when one is not in such a relationship" although I suppose it would apply to cheating too), one should be wearing condoms, yes? That's the part I was talking about, and I don't see how it's the opposite of what people should be doing.

Sorry, I misread your comment in the opposite sense.

Ah, no worries - was just confused :-P

I wish this was true.