Originally Posted by Martian

The Journal of Sexual Medicine is a peer-reviewed publication, and King's College London is a well-established research institution. There's nothing pseudo-scientific about this.

Identical twins were used to demonstrate heritability. If two identical twins offer different answers when asked whether or not they have a G-spot, it rules out the possibility that the trait is heritable but not represented in the sample used.

The study was designed to examine the heritability of the G-spot, based on the fact that heritability has been observed in every anatomical feature studied to date. We can also hypothesize that if the G-spot exists as a significant physiological phenomenon, psychology or 'knowing how to work it' wouldn't be an issue, any more than it is for the glans or clitoris or other sensitive sexual organ. Based on that, the lack of correlation between genetically identical twins and G-spot prevalence would seem to suggest that the G-spot is indeed not a distinct physical structure. There are other possibilities for why some women respond so strongly to stimulation of the anterior vaginal wall, and further study would be required to determine the basis of the effect.

Sounds like you need to educate yourself on how science actually works before criticizing the experts.