[sjastro]

Originally Posted by Eratosthenes

http://www.sns.ias.edu/~malda/sciam-maldacena-3a.pdf

https://m.youtube.com/watch?v=NblR01hHK6U

There are some interesting articles on the illusion of gravity - in fact Einstein referred to the illusion of gravity many times

Einstein referred to gravity as a fictitious force. Fictitious forces are not illusionary because they can be measured.
An accelerometer located inside a car will measure the backwards proper acceleration due to the fictitious force as the car is subjected to a forward coordinate acceleration.
When you stand on your bathroom scales the proper acceleration is directed upwards and opposite to the coordinate acceleration due to gravity.
Otherwise you would fall straight through the scales.