The Moon controls women and weather

Julia writes -

Women lose blood every month under control of the Moon. No other species bleeds in this way. If you calculate the blood loss, it is more than the maximum amount recommended by the Blood Donor people as safe. Women are therefore operating under par for the best part of their lives, from age about 13 to age about 50. All due to the Moon! Great design.

If your objective was to suppress the power of women, this would be a pretty good way to do it. 

The moon also controls the weather in fortnightly cycles. 

You don't need to argue over which book to read for any of this. You can observe it yourself if you care to do so. 

http://suliwrites.wordpress.com/2012/04/15/blood-sacrifice/

http://suliwrites.wordpress.com/2012/05/07/moon-weather/