I love that this made it on Hackernews so as to prove the non-techies point! :-D
He is right too - when dealing with the hard sciences it's most important to BE RIGHT (it's either a 0 or 1 - and it matters), but when dealing with relationships it's much more important to BE EMPATHETIC.
If you aren't - you'll be seen as a contrarian/confrontational.
I think we need to practice "being ok with being wrong" when the relationship matters more than the subject matter. Cheers!