I have an upright piano that was made in 1914.

In retrospect I wish I had gotten a newer/smaller piano… that thing weighs as much as a small car and it’s volume is more appropriate for a concert hall than a house.

We got it from a piano restoration company that sold it to us for just the cost of moving it because they have too many ancient uprights that no one wants.

Doesn’t count unless those are Lego brand guide wires.

(Although I’d let it slide if they were Mega Bloks wires)

I don’t think this is correct.

I’m a middle aged man in poor overall shape but I can still do cartwheels.

I’ve never been able to do a pull up.

Cartwheels don’t require much strength. You aren’t on your arms for very long and don’t actually further extend your arms during the period when they’re touching the ground.

What cartwheels do require is coordination, flexibility, and balance.

… and practice. Lots of practice.

If I had to guess for most people the limiting factor as you age would probably be flexibility.

That’s assuming you knew how to do them when you were young. I learned it in my mid twenties, but would not envy someone trying to learn it in their mid forties or later.

If statisticians are mathematicians then so are physicists and engineers.

Using math is different from being a mathematician. Mathematicians discover new mathematical principles, not just make use of existing ones.

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Pedantically, it is controversial within Christianity because the doctrine of the trinity is controversial.

Multiple denominations of Christianity reject it so they would not agree with the statement that Jesus is God.

Try playing n-back games to improve your memory: https://en.wikipedia.org/wiki/N-back

Memory is a skill and can atrophy over time, but you can also improve it over time with the right practice.

That’s not the same thing, though.

You didn’t overpower your own bad technique.

You overpowered her good technique, and presumably did so using good technique of your own.

You can’t overpower bad technique.

IQ tests are pseudoscientific B.S.

They don’t measure intelligence; they measure your skill at taking IQ tests.