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Macroscien said..
Now we know that 500 m is not this same as our 2 sec.
Competitor needed to withstand / sustain that speed over more then 30 seconds.
Now if you look back at our charts that 500 meters we could compare to our nautical mile, to be fair due to improved gear we have.
You do know that we already do compare GPS speed, to 500m or nautical mile? ... its that whole "division" thing that people are going on about in the GPS-team-challenge.
Distance measurements are an artifact of the measurement technology.
If you can measure your velocity in real time, why use a derivative (Math) technique to calculate it?