But 1) even if I measure a GPS’s accuracy, I can’t distinguish errors caused by relativity from other instrument errors, and 2) GPS devices and satellites already try to correct for relativity, so the error I’ll be observing is the error in correction.
But 1) even if I measure a GPS’s accuracy, I can’t distinguish errors caused by relativity from other instrument errors, and 2) GPS devices and satellites already try to correct for relativity, so the error I’ll be observing is the error in correction.