Aaah. I understand. :)

Thanks. Let’s see:

The weak equivalence principle, also known as the universality of free fall or the Galilean equivalence principle can be stated in many ways.

And

“… in a uniform gravitational field all objects, regardless of their composition, fall with precisely the same acceleration.” “The weak equivalence principle implicitly assumes that the falling objects are bound by non-gravitational forces.”[11]

I’m just beginning to understand. I’m not there yet.

I don’t understand. What’s a uniform gravitational field and why does being inside one feels like standing in an accelerating elevator?

Turtle is ging to szay hungry. It can open neither of them, because it’s missing those precious opposable thumbs.

Efficiency.