It is the human equivalent of "right tool for the job" I would think.. Your point about homogeneity is an important one as well. In small organizations, cultu

It is the human equivalent of "right tool for the job" I would think.. Your point about homogeneity is an important one as well. In small organizations, cultural fit - opinions about that culture notwithstanding - is much more important than in larger ones, for the reasons you listed and more. That said, a wise co-worker once said "you can't have juniors without seniors". While younger workers can be a boon to startups from a price/performance point of view, it is important to also have experienced, if more expensive, employees who can provide guidance and direction to those juniors. Otherwise, you can find yourself a few years down the road to growth with massive technical debt and a naive technical platform that was built with good intentions but is now full of problems that are extremely hard to correct. Yup, I'm speaking from experience here. ;-)