Positive Mass Theorem: Explained Simply for Gravity Shielding

[TimeRip496]

Can anyone explain it to me as simply as possible? I try reading it on wikepedia but I still don't understand. I need to know this in order to know why gravity shielding is not possible.

 

[ZapperZ]

Can anyone explain it to me as simply as possible? I try reading it on wikepedia but I still don't understand. I need to know this in order to know why gravity shielding is not possible.

Explain explicitly what you have read that you have not understood.

Zz.