[spywaregorilla]

> Counterpoint: At a top company like Google, full of some of the most talented people in the world, there simply won't be enough promotions to go around.

I don't know anything about google specifically, but generally it's not the size or the talent level of a company, but the growth rate. If you want to be promoted, the most important question is whether or not the company is growing. Else the only way to go up is if someone else leaves.

High turnover can also accomplish this effect but is limited to a very small number of industries.