Carmack described the wantrepreneur. Beware the "idea guy," find the head-down guy or gal who is smart and a workaholic; people who tend to work more than socia

Carmack described the wantrepreneur. Beware the "idea guy," find the head-down guy or gal who is smart and a workaholic; people who tend to work more than socialize, fall in love with ideas and talk about work that they're not doing. There's no free lunch and schlepping where others give up or aren't willing to invest energy, time and money are also key. If something is relatively easy for you but more difficult for most others, that's a good signal. And if that something becomes very difficult for you, think of how hard it would be for someone else... that has the potential to be a defensible business.