Search:

http://4.bp.blogspot.com/_JhJe_UoTYl4/S-jXEQ64BSI/AAAAAAAAA7E/ERAiZjSV9mw/s320/high-expectations-asian-father-career-advice.jpghttp://cdn.memegenerator.co/instances/460x/17042411.jpghttp://i.qkme.me/C...

If spacetime is not a material substance, how can it make MASSIVE objects, which tend not to accelerate due to their inertia, move?
2 - If gravity is not a force, why does an object put in rest...