somebody beat us to it , there already here , farm robots

you need to learn how to time travel , it seems.

but I dont see any micro robots yet , and they should be much cheaper.
especially if they are built mostly by robots and just supervised , programmed
and serviced by human beings as amaranth sudgested.

3/4 inch of dust build up on the moon in 4.527 billion years,LOL and QM is fantasy science.