It is hard to visualize exactly how these crossovers happen on a
microscopic scale, but the physics of the skin effect dictate that it
*must* happen somehow.

Theory: "...the physics of skin effect dictate that [it] *must* happen[*]somehow[*]...

Now, compute the consequences of the theory to see if it is right what
it would imply.

Compare those computation results to experiment. If they disagree, the
theory is wrong.

If you can't apply this procedure, your statement cannot be verified
scientifically.