Part 1 was previously posted and it seemed that people likd it, so I figured that I should post part 2 - http://waitbutwhy.com/2015/01/artificial-intelligence-revolution-2.html
There's a story about a card writing AI named Tully that really clarified the problem of FAI for me (I'd elaborate but I don't want to ruin it).
I've liked all of Tim Urbans articles. Very thorough and in depth.
Thanks for sharing, this was awesome.