I have calculated that an electron attracts the earth according to F=GmM/r^2 formula just as well the earth attracts it with a minuscule value and that yields to the acceleration of earth towards the electron and again according to x=1/2 a t^2 formula earth's CM move to an electron 7,48.10^-54 meters. But that is much smaller than Planck length. I thought anything smaller than Planck length is meaningless. "This is the ‘quantum of length’, the smallest measurement of length with any meaning." How come?