Indeed, but what separates Rush as well as most conservatives is to admit that they don't know everything and defer to people of expertise in the field.
It's intellectually honest and serves to brighten ones horizons.
Libs on the other hand think they know it all and refuse to listen, let alone acknowledge their shortcomings.
For sure, worse than that most libs have a blind allegiance to the left and never even question what pap/lies/distortions they are fed.