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As I see it, this thread is revolving around two semantic concerns:
1. What is the meaning of "real" (length, time, etc.)?
2. What is the meaning of "apparent" (length, time, etc.)?
Arguing, correctly in my opinion, from the perspective of a
sophisticated practitioner of physics, John Denker argues
persuasively that "real" should be essentially synonymous with what
is commonly called "proper," that the "real lengths" of rods and the
"real rates" of clocks are their "proper" lengths and rates. Thus,
moving clocks do NOT "run slow" and moving lengths do NOT "contract."
When we say that they do, we are talking only about "appearances."
John Mallinckrodt
Cal Poly Pomona