Our most broken assumption in Year 1 is that anyone will stick around for Year 2.

Spoiler Alert: They won't, and the cost of giving away a ton of equity and responsibility to people who won't be around for long is incredibly expensive.

I see this play out all the time, especially with First Time Founders who naively think that everyone who promised to help launch their startup in Year One will actually stick around to do it. It’s easy to make that mistake — when everyone’s talking a big game and acting just as excited as we are to build something amazing, we can’t help but believe them.

But all of a sudden, people stop showing up. That Co-Founder CTO whom we thought was going to build the whole product for "free" goes MIA. That mentor who ...