I give up, after many, many years!

terry writes:

well if you are not sure, it would be polite to say so instead of
using your usual authorative tone ...

There's nothing authoritative about my tone.

That pretty much says it all. You want people to help you but you
dont give a **** what they feel or how you treat them.

I care much more about them than they do about me.

I gave you an example, cacluculating the density of a parcel of
atmosphere from the gas laws.

You just plug in the numbers and do the arithmetic by rote for most
calculations. Nothing particularly advanced or difficult about that.