Good one!!! Did you model this? :-).. interesting... you are saying that if P(S) is greater than 1, P(S) doesn't apply to that particular startup.. its meaningless.. and they should stop wasting their time.. is dat a valid argument to why your metric could be greater than 1?
A = Average age of founders
N = Number of founders
Q = Quality of idea, 0-1
G = Graham Quotient: How hard you'll work, 0-1
T = Taleb Quotient: How lucky you'll get
i, j, k, x: Adjust to fit the sample of 5 famous startups in the news this week
Repeat as required