AAF: Well, thank you for all of the above! Indeed, the Relativists always assert that you can't feel your weight in free fall. However, if you throw one of them towards one of their black holes, he or she will have his or her body twisted and stretched like Italian spaghetti and feel his or her weight in a very painful and tragic way. That is what the Relativists imagine and say; right Cincirob? But even without the help of their imaginary black holes, the observer can determine the gravitational acceleration in free fall very easily by merely using one of the modern and simple instruments for measuring the strength of the gravitational field to any desired degree of precision. In short, your above assertion does not hold water.
Cincirob: Well gee AAF, do you really think you figured this out an Albert didn't. In all these ideas the observer is assumed to be small relative to the rate of change of field around him. Put another way, it's the calculus idea of the size of the observer approaching zero.
Curt: It's the size of the observer's brain that approaches zero, when that observer is a Onestonian. (I'm just going along with the object of this forum: (Try to humiliate others.)
Cincirob: nice try.
AAF: Gee, Cinci; you're probably the first physicist who assumes the size of the observer to be a calculus entity and approaching zero! However, as far as I know, nothing can escape the stretching in the gravitational field of the black hole of Relativity, not even something as small as a proton.