Gravity in fact does not exist, it is a theory. You can’y point to gravity and say there it is.
I’m sorry….. Google Sandbox is one thing… Gravity is quite another. I am an engineer and this is just stupidity and hopefully just a joke trying to prove a point??
Gravity is measureable and defined. 9.8 m/s^2
BTW – if gravity did not exist, then we would have all long ago been flung from the earth due to rotation. 
I suppose that trees do not produce Oxygen and humans do not exude carbon dioxide?
Whew.. OK – Back to the Sandbox!
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