My MW made an interesting comment yesterday. She said that by our drive to know as much as possible about labour and birth we've taken some of the mystery out of it, some of the ... spirituality almost. She said that before we knew anything about the womb or cervix, babies still got themselves born, the process happens anyway no matter whether we know what's going on or not. I understand what she's saying, though I disagree a little with the first bit - I'm one of those people who feels the need to understand everything, so knowing about the stages of labour and what's going on inside will be helpful to me I think, and I don't feel it'll be any less of a mystical/spiritual experience because of that, but she's right about the second bit IMO, and if you take the first bit to be relating to society as a whole rather than individual labours I can go with that too.