And just to be clear , if someone sends ETH to a previously deleted account , that account would then become active and the Ether would not be lost . <| sep |> They don ' t learn to get a dumb joke in the states . <| sep |> Dragon 32 ? <| sep |> yeah i personally prefer them closed , i think it ' s fine either way though <| sep |> I am disappointed in those watermarks . <| sep |> early graduate , but have also gone through a few intro books on QFT . The most obvious answer is that it creates thrust in the same way most things do pushing off of the external environment . I have yet to see an experiment which has the device properly shielded from EM fields down to the micronewton level . Every paper gives some vague argument about how they tried to minimize it , but no one actually goes through the measurement and shows that the effect is absent to the required precision . This is the most obviously important piece to control for , and it ' s annoying to see how experiments aren ' t really putting enough effort into it .