Well, if Ed did receive the information from 'higher sources' that means that it is possible for others to receive that information also.
Maybe there is a great 'thought, information,' bank somewhere,on a different level of consciousness.
When we are in certain 'altered states', such as relaxation, meditation, sleep - we can access it, and receive the information.
Enough inventors and great thinkers, seem to have accessed this level quite often.