OT (unless we broaden the topic to public ignorance in general).

I’ve mentioned the young Moon hoax believer who didn’t know that countries other than the US had military forces.
I ran across another one the other day. This one had never heard of inflation.
I had taken my Rolls-Royce out, since it was a nice day, and happened to stop by a favorite local book store. A young chap who pulled in at the same time I did complimented the car but had to add that he didn’t think any car was worth $600,000.
I told him that it didn’t cost anything like that, since it was 40 years old when I got it.
He said he meant new. I responded that it had in fact cost 21,200 dollars new. He was incredulous and said you couldn’t get a Toyota for that. I said you could in 1968. He asked why that was different and I said, “Er, things cost a lot less back then. A new Camaro was like $3000 back then and minimum wage was a dollar an hour.”
HE SAID I WAS PULLING HIS LEG, NOBODY WOULD WORK FOR A DOLLAR AN HOUR, and that a dollar then was still a dollar. He did promise to check it out though. I asked him what he did for a living. He said he was an IT student at the local junior college, and about to graduate.