Somewhat flippant, but also a serious question - do people like Martin Fowler and uncle bob actually do anything or do they just describe systems that do not (and probably will never) actually exist? Have they built real world software, or do they just describe some ideal state that has never actually occurred in reality - some kind of geek porn?

I’d much rather listen to people who have actually done things than people who have theoretical done things (people who do both are best).

I ask because I thought Rob Pike was one of those people until I found out what he does / has done.