When a field is young and small, it needs to draw the best people from a small pool. "Geeks" worked for this in CS. As it ages, it needs a larger pool, but it

When a field is young and small, it needs to draw the best people from a small pool. "Geeks" worked for this in CS. As it ages, it needs a larger pool, but it can settle for people who are just good, not necessarily the best.