He's not that old, but he's not that young, either. He worked on Plan 9 for like a decade before this happened. A few years before he put out this blog post, he

He's not that old, but he's not that young, either. He worked on Plan 9 for like a decade before this happened. A few years before he put out this blog post, he finished his PhD thesis. While a bit silly to hire someone with that much experience as an intern, it is how most PhDs are treated.