Quote:
Originally Posted by spratleyj
So if you can't ever "precisely or infinitely" know the velocity, let's say you know it with a very good probability (as high as possible) but if this were to be the case you would have little idea of where the particle is... thus wouldn't it be very hard to measure the velocity of something if we're not sure where it is?
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The point is, to whatever extent a measurement requires you to know the location, that is the limit on how well you can know the velocity, no matter how accurate you think you are making that determination.