The famous counter arguement comes from hundreds of years B.C.E. by a guy named Plato that said in paraphrase; Necessity is the mother of invention. http://www.bartleby.com/59/3/necessityist.html
I still very much appreciate the "epiphonies" but need and necessity does seem to be far more critical in raising our thought levels.
There are many smart people that do have "epiphonies" and do nothing about it, but the needy are thus compelled to turn the thought into action out of necessity.
So the higher thinking is not sufficient because one must have the gumption to turn the thought into substance or invention or into an action.
High thought is not enough.