If a kid asks "Is there a Santa?" you can tell him "No" and feel not-so-bad. But if he says "When will Santa come?", if your response is "Don't be silly, Santa doesn't exist," then you're being a jerk.
There is being a jerk, and then there is being realistic. Yes most people will get rejected, but most of them fit your basic mold. I dunno about you, but I haven't heard of pg backing a single non-techie founder...have you?
I have no clue, to be honest. I don't know half of the YC companies that exist.
Realistic is fine, but he's not saying "Do you think I have a chance?", he's saying "When will we hear back?" It's rude to answer a question that hasn't been asked.
Anyone who understands math will at least get what the issues are in hacking, even if they don't understand random details. They won't panic at the sight of formal notation.
Yep this was Kulveer and Harjeet Taggar from Auctomatic, as far as I know they only met up with their hackers (Patrick and John Collison) once at Y Combinator. And Auctomatic was an extremely successful investment, I doubt we've seen the last of those guys.
Yeah, most of us will be rejected. No reason to be a jerk about it.