As a layperson, I think Kahneman's work is brilliant and I can't wait to read the book, but do understand that to the actual evil scientists - research psychologists - he is Donald Knuth, not, um, whoever's hot in CS these days. They think his ideas revolutionized the field a few decades ago, and it's great that he finally got his book published, but meanwhile, we've learned a lot and that whole dual-system thing is kinda quaint.
So lucky for us, if Facebook were really basing their designs around what is more Poor Richard's Almanac than the Bible, we can build far more compelling experiences than Facebook using actual cutting-edge psychology - and I feel kinda lucky to get paid to do just that.