Meta-Programming Erlang is not really easy because of the way the trees are parsed. - Joe Armstrong

That's enormously interesting, the petabyte change because what's gonna happen is all human knowledge, every book that ever been written will fit into 138 terabytes of memory. That will mean the petabyte of memory can store all human knowledge and we can give it to every person on the planet. If we do that it's totally going to change society.

Bad concurrency model, I think, is something that make a lot of programming artificially difficult.

I thing the first company that's a pure Erlang worth a billion dollars.