There are 3 modules, each of which covers one of the 3 parts of the Erotic Equation. I find that the face of a woman having an orgasm is even more beautiful than anything else, only rivaled perhaps by what her body language says when she is having it. Anyway, this was most refreshing; thank you! And when these so-called 'experts' pass on bad information to the public, all it does is keep the majority of people in the Dark Ages about sex! That's pretty much essential anyway unless you absolutely know your partner has no diseases, and it's probably a good idea anyway to stop you getting a urinary tract infection bacteria from shit don't mix well with your urethra and kidneys. Check how they look before, dull and pale, hiding underneath thousands of layers and patterns of norms and behaviour codes.