Per https://www.eia.gov/kids/history-of-energy/timelines/ethanol...
It looks like it usage of ethanol as an additive started increasing around the same time lead was being phased out.
If these options clearly make git better, why aren't they the defaults?
They aren't generic and the output needs to be monitored.
I learned on a Mac. The course material was copying from a book without looking at the screen, then correcting the errors. This second pass to correct mistakes is different, and it's not clear that you can be removed when taking notes without affecting learning.
If you're only using one finger to type, of course you're using less brain activity to control that one finger, versus all ten.
I'm unable to read the actual paper, but from the comments here, it sure seems like they worked backwards from an existing premise ("handwriting is better than typing for retaining information") and found a way to make that "truth".
Edit: Missed the link to the article in the comments. Reading it now.
I agree with their premise provided students don't know how to touch type (given the anecdotal amount of visual typing I've seen a reason concern for students) it's also interesting that it's cursive, which is being taught less.