[joeyspn]

> ... the best co-founder is someone you already worked with. Not helpful? That's the truth.

Not really.

I started-up with a co-worker (of 2 years) and a guy whom I hadn't worked with before and guess who was the first to bring problems to the company and quit? The guy I previously worked with...

Truth is you don't really know a person until you're both in a seriously f*ckd up situation. That's what my experience has taught me.

[crdb]

I think what Alain is saying is you don't know how somebody is until you have worked a significant period of time with them, including stressful times where things went wrong (my own benchmark of whether someone is trustworthy is pretty much how they behave in such times - agreeing with your experience).

Going with a stranger might still be a good option if e.g. your previous company had bad quality staff, or if you were a business person and never had any contact with any technical people, but it's still akin to playing roulette.