Off-topic, but has anyone ever taken the time to dive into: http://alternativephysics.org/book/GPSmythology.htm http://alternativephysics.org/book/GPSmythology

Off-topic, but has anyone ever taken the time to dive into: http://alternativephysics.org/book/GPSmythology.htm http://alternativephysics.org/book/GPSmythology.htm ...which claims that the "standard" account of GPS needing relativistic adjustments is not correct. If nothing else, the author seems to have perfected the "crank" writing form.