Do you have some source for the claim that relativity doesn&#x27;t really matter for GPS? If I google &quot;GPS relativity&quot;, I get results from several universities, Wikipedia, Stack Exchange, Wired, etc. that all disagree with you.<p>I don&#x27;t know the science well enough to figure it out myself, but I can&#x27;t find any trustworthy source that contradicts this idea.