well, 2 dimensions of 64 bits is 128 bits, while 3 dimensions of 64 bit precision is 192 bits... so mm precision to pluto is along 1 dimension I take. I just wasn't sure of the magnitude we were talking.
The precision doesn’t change when you change the number of dimensions.
If you are using a 64-bit float, then you have 53 bits of precision in 1D, 53 bits of precision in 2D, and 53 bits of precision in 3D. The precision doesn’t change as you add or remove dimensions.
