[edw519]

"good health"

Thanks for mentioning this. People don't normally think of their health until they lose it. It's so important that I'd represent it like this...

Probability of success = (a + b + c + ... + z) * health

[dennykmiu]

The best advice that I ever received regarding startups is that one needs to think in terms of a three-legged stool, with one leg being our family, one leg being our health and the last one being our career. If two are firm on the ground, we have a fighting chance fixing the third. Otherwise, forget it.