I don’t believe you are a surveyor as your screen name implies and you previously said you were. You have previously said that relativity is bunk, but if you are really a surveyor, you are using equipment that relies on the GPS satellites. The satellites have hardware and software that compensate for relativity to give you cm accuracy. If they didn’t the locations marked by you would shift 100s of feet PER DAY. How do you explain this?
That has to be the stupidest thing you have ever posted. Where could you ever get such a false opinion?
" but if you are really a surveyor, you are using equipment that relies on the GPS satellites"
Occasionally I do. - GPS is good for control surveys for highway routes, or other such work where long distances are concerned, or in work where accuracy is unimportant, such as tagging water meters, fire hydrants, sewer manholes, etc. But for most work GPS is useless because obstructions will introduce error that cannot be accounted for. GPS accuracy depends on a uniform horizon, and in close quarters such as a residential neighborhood, it is not attainable, so using GPS will quickly get you in trouble. Some will do it anyway to cut costs, but at some point that kind of bravado will come home to roost.
The kind of 'shifting' you are talking about is not due to failing to account for relativistic considerations, but due to deliberate error that is injected into the broadcast ephemeris, called Selective Availability; that is not presently done anymore. Most high precision GPS work is not taken in realtime, but is post processed with statistical correction to conform to the accepted positions of existing ground stations. Realtime GPS surveying is done with what is called Realtime Kinematic processing, which cannot deliver precision without long observation times. For this reason conventional "total station" equipment is more efficient unless the site is clear of buildings, billboards, trees, or poles that interrupt the sky.