[MHGinTN]

Laz, if you think about how pi is derived, what it represents as a ratio between the radius of a circle and the circumference, then the value of pi will vary according to the strength of the garvitational field in which the ratio is measured. [I learned that from Dick Feynman. He wasn't lyin' to me, was he?]

[MHGinTN]

garvitational = gravitational (in some universes)

[Lazamataz]

It's an interesting concept but the effect should only be observed by someone outside of the gravitational effect. To the person inside the gravitational effect the circumfrence and the radius will not vary.