If we used the words 'socially' in front of 'ignorant', I would have to agree.

I see that as not being just true and accurate, but it is also very helpful for me personally. I have a problem with language, its being resolved slowly.

My father produced this aura of lacking common sense

I would be very interested to learn how that manifested if you are of a mind to share it. I think I may project the same.

My own father was a high IQ person with a very broad and in-depth knowledge and understanding of how the world works. He was completely mad on the inside and in his personal life, but projected a 'firmly in control' image to the outside world, was very respected and had an interesting and subtle way of projecting authority.