https://www.youtube.com/watch?v=wt-iVFxgFWk https://www.youtube.com/watch?v=Uooh0Y9fC_M https://www.youtube.com/watch?v=IyUgHPs86XM
That's what it looks like when person knows what he's talking about and quite passionate about it - such person wants to share his thoughts and experiences.
After I read "Smart Guy Productivity Pitfalls"¹ it became apparent to me that John he has quite an acute awareness of life's smaller details.
Too many people care too little about a lot of things. There seems to be a common perception that a passionate-about-the-reasonably-small-details attitude is simply being "anal" or "OCD". Finding people who are intensely passionate about their work-- not just the paycheck-- is insanely difficult. It'd be nice to have the company of more people who fall into John's category (though statistically unlikely at his level). I'm not saying that to hold him on some kind of pedestal, just giving him credit for his hard work.
¹ http://bookofhook.blogspot.com/2013/03/smart-guy-productivit...