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@greykell I collect the first 6 months following safe guidelines. It was the only way I could get any sleep. A sleepy parent is also an unsafe parent

@elam84 I'd say there's no evidence of a pattern of boy after girl, girl after boy, etc. They say every child is independent on the prior and not effect the next- but I do wonder if some men have more x or more y sperm, to cause families of more heavily weighted genders to one side.

@grahammartinroyle Is that genetic biological bias or is that human bias (e.g. Asian culture preference towards boys, female infanticide, etc.)