Look at what the folks who have fundamental units named after them had to do by hand. The did math by hand, as a matter of course, that the average technically educated person simply cannot do.
Even as late as the 1960’s - and I’ve had occasion to review many research papers from that era - folks were much better at math and the organized thinking that is required to successfully accomplish tough math problems makes for a more measurable intellect then as compared with today.
So I’d say, the way we measure IQ can put greater emphasis on the organized brain capable of doing complex mathematics by hand - and that is not as prevalent today as it was 100 years ago. Being able to do math in your head or by hand DOES mean you are smarter by any measurement in my opinion.
I would dispute that. I was classically trained - all my math examinations were designed so that they could be done without a calculator. All you needed was a pencil.
I'm not firm on the math quite yet.
I'm not using a pencil. I'm using Perl code and a spreadsheet to try to come to grips with the fundamental core of it.
Doing arithmetic with a pencil would NOT help in my quest.