How ironic. The reason you can't read the comment:

"> The big milestone is when computers can read and understand information like humans do. There is a lot of work going on in this field - Google, Microsoft, Facebook, academia,... Right now computers don't know how to represent knowledge so they can't read a text book and pass a test."

Is because reddit is threatened enough by "computers that can read and understand information like humans do" the he's locked out of it!