This advice is good in theory... but I can't follow it. I'd like to say I could, but honestly... unless I am working on a mythical world of some sort, I *need* to know more information. If I am writing a story in Denver I have to know the street maps of Denver, what types of stores are there, the average closing times of shops, food restaurants, apartment prices, minimum wage, etc... Otherwise I just leave in a lot of holes that would take twice as long to fill in later.
I like the idea of turning everything off, not bothering with looking up bigger words or anything like that... but it doesn't work for me.
With that said, I do really like the advice he's got for writers. I really like Stephen King. :D