Or some such BS.
Now ask him where the highest point of gravity would be. You'd think that it would be in the opposite direction of gravitational pull, ie; away from the earth, starting at the center of the earth. So theoreticly, you'd weigh a lot more standing two inches from the earths core even though there isn't enough mass between you and the core to make a difference.
However, if there is a graviton type particle/wave/wavelet, the focus of said particle would originate at the focal point ie; the center. The effect would propagate like all other observed forms of radiation with the effect thinning out over distance from origin.
Podkletnov and others are working on this as we speak.
The old 'curved-spave' analogy is useful.
But what force is making us "slide down" these four-dimensional curves?