Hello, I'm a bit slow at understanding Homestuck and there was something I was wondering. In the post-scratch timeline, Nanna is one of the kids and Dad is not. Could you explain why?

Nanna was a product of ectobiology.

Dad was made in a vagina.

Also if Dad were one of the kids there’d be an uneven male-to-female ratio and that wouldn’t end well.

~Mod T