Stupid electronic book I'm through... help me understand

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A PhD in what? Surfing science?
 
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I don't think it should've been deleted perhaps the server crashed?

If so it's because of your previous offences and the moderators don't like perpetual motion threads because they cause arguments.

It was total rubbish anyway, the earth is not a perpetual motion machine - the rotation and orbit velocities are gradually slowing due to tidal friction.

Tidal acceleration - Wikipedia, the free encyclopedia

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I don't see why you care, since you're going to be banned soon, especially after that abusive PM you sent me.
 
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