For those of you who don't know, Dan
was the chief design architect for Parrot
for several years. He handed over the hat to chip
and then shortly left the project all together.
He promised a post-mortem describing his tenure with the project and what he thought went well and what didn't. While there was wild speculation concerning personality problems, he was able to keep that from affecting the project for the most part. To that end, he waited to release the post-mortem so that it may be looked at objectively.
I write this from a perspective of someone following the list. I was not on the inside so I don't know the whole story. Take a look at the Post Mortem if you are at all interested in Parrot.