Because I have spent more than 10 minutes figuring why Phoenix code wouldn't compile, and that hasn't happened with any other C++ library.
What's the problem with having to _think_ for 10 minutes? If you get through that experience it will take you only 9 minutes when you have to do it again. I still can't understand why people complain when they have to use their brains.
This is not a helpful position to take, and to be honest I find it offensive.
My job is researching AI algorithms, I consider myself to "use my brains" all day, every day, trying to design new and interesting algorithms to make progress in solving some really hard AI problems.
However, I don't have infinite brain power, and 10 minutes spent decoding huge TMP error messages is 10 minutes I didn't spend solving them problems I actually care about solving.
+5! Matthias