"Peri of Pera" wrote in message
...
I agree that any clock always ticks at the standard rate in its own
environment, the local frame. The issue is that SR claims there is
time dilation affecting moving ojects even if it cannot be measured in
the local frame.

It affects what *would* be measured (whether or not you actually do the
measurement).

Just as it does not matter whether or not you can get a device to measure
the length of a moving object, the object still takes up an amount of space
in your inertial frame at a given time, and SR tells you the length of that
space.