If our ideas are dictated by prevailing intellectual fashion, and what's acceptable in the academic community, then our ideas will not be revolutionary.
For our ideas to be truly great we have to be independent thinkers and forsake common "wisdom".
problem though is that if one advances ideas against the prevailing
consensus, then one's "absurd" idea will be vehemently attacked,
mercilessly ridiculed and, should one be a scientist or philosopher etc,
ones career will consequently be severely negatively impacted.
course sometimes "absurd" ideas will really be absurd. And indeed most
of the time they will be. However, the blanket ridiculing of new
"absurd" ideas cannot be desirable since it will serve to stifle human
progress in understanding the world.