hmm…pennies.

Will the government [really] stop making pennies?

That will make the sellers-of-goods: round down everything to [about 5 cents less], or [to five cents more, aka to another nickel].

I’m betting on [lots] of sellers rounding things up to- 5 cents MORE.

I live near a lot of small towns- the customers, here, won’t like some things- going up by 500%.

What do you think?

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(Here’s an article about that):

https://abcnews.go.com/US/treasury-department-phase-penny-after-trump-coin-longer/story?id=122070266

I have not yet listened to the whole video aside from a few minutes, but it seems to me the distinction between discovery and invention needs some further definitional clarity.

In this puzzle, two bicycles begin 20 miles apart, and each travels toward the other at 10 miles per hour until they collide; meanwhile, a fly travels continuously back and forth between the bicycles at 15 miles per hour until it is squashed in the collision.

The questioner asks how far the fly traveled in total; the “trick” for a quick answer is to realize that the fly’s individual transits do not matter, only that it has been traveling at 15 miles per hour for one hour.

As Eugene Wigner tells it, Max Born posed the riddle to von Neumann. The other scientists to whom he had posed it had laboriously computed the distance, so when von Neumann was immediately ready with the correct answer of 15 miles, Born observed that he must have guessed the trick. “What trick?” von Neumann replied. “All I did was sum the geometric series.”

Gauss shook all the low-hanging fruit out of the trees. Doesn’t seem to matter what it is, when you dig into it you find Gauss in there somewhere.

Bingo.

Some folks top out at arithmetic or algebra, sure, and they’d think QM math was pretty hard. QM math isn’t harder than (or even different from, it’s the very same as) the math used in Newtonian physics. A lot of tricks are used to reduce math to algebra where possible. To further that end some things are written in a different notation.

By considering the symmetry of a system you can cut the work way down, into knowing if the answer is just going to be zero (then you don’t have to do anything) or if it will be something that requires more work. People like Gauss, world-historical geniuses, figured out that you can do things like that, but reasonably-capable-with-math people can apply what they figured out with little trouble.

https://youtu.be/ctXDXABJRtg?si=8xW7gkVtUM6etgTL