[Silhouette]

I don't think the core of a good developer has changed much since the early 90s. You still want people whose skill-set is T-shaped... You want them to go deep on at least a few domains, but you want them to have broad experience in lots of them.

I think Michael's point was that a senior developer might have a very different idea of what constitutes "deep" to a junior developer.

By the standards of a 20 year industry veteran, a six month project they worked on three years ago using language X might not even make X worth mentioning unless it was specifically asked for, next to the half-dozen languages they already show where they have 5+ years of experience including shipping multiple projects in each one.

By the standards of a junior 2 years out of school, a six month project working in language X last year might make it one of their top two languages and get presented as "expert-level" understanding. These are the people who tend to list fifteen programming languages, because they used each of those languages for about five minutes on a toy project during their CS course.