I think it would be fair to say you can have knowledge without needing a Mensa IQ.
The point is that the gaps in peoples knowledge are due (in my opinion) to laziness. Being spoon fed rather than discovering. How many people read or do practical stuff?
But Varche, as I said before:
"As for gaps in knowledge, that is not unusual and has been the case ever since humans started to walk the Earth. Unless you study, or are really interested in a subject, names of artists as in this case will not be known. But, I bet, the same youngsters will know far more about computers and their programmes than I will ever know!"In other words, it is not somebody being lazy to have gaps in their knowledge, but rather more a case of their true needs in life. A computer expert, police officer, or social worker will each have their specialist areas in which they gain knowledge because they need it professionally. A mother with six kids will require different knowledge and skills to keep her family safe and secure. How many of them will know the link between Thomas Hobbes, Galileo, Bacon, Mersenne, and Gassendi? I do because I have studied that period of history, but I don't expect most people in the street to know. Why should they? As I know about the sinking of HMS Hood, or the Battle of Trafalgar, and it's implications, along with the thoughts of Field Marshall Erwin Rommel on Hitler; then there is the development of the railways, etc, etc, etc. But again I know nothing about computer workings and so much more because I never had to, as all I had to know was how to run a £ multi-million business with 3,500 staff along with financial management, property management, security management, HR management, etc, etc. Would I know any of that if I had not needed to? No is the easy answer