I think PG's opinion is based on Sam's personality. I don't know the guy, neither do I know PG, but I'm assuming he likes what he sees in Sam, not just what Sam

I think PG's opinion is based on Sam's personality. I don't know the guy, neither do I know PG, but I'm assuming he likes what he sees in Sam, not just what Sam has done so far. Loopt isn't ever on my mind, neither anyone I know uses it - that sounds bad for a 6 or 7 year old, mass market YC company/product from one of YC's most prized and highest regarded/praised CEOs. So I think Sam might have picked the wrong battle. However, Sam's property that pg likes him for (relentless and tenacious) might be exactly what's preventing him from ditching the loop (no pun intended) and keeping him ditching the idea or jumping ship altogether. Even Sam’s tenacity can’t save a product people don’t care deeply for. Or maybe I just give pg’s judgment of “people” too much credit by default, as an extension of his judgment of companies/products. Maybe pg sucks at picking winning people, but is great at strategy/tactics/products/ideas (just a hypothesis). Either way, the takeaway for me here is be a bull dog - but don’t bark at walls, i.e. be tenacious, but find something worth being tenacious for.