Board Thread:General Discussion/@comment-75.85.184.179-20160620213454/@comment-3568954-20160702175022

first off all the madness caused by incest is only caused by siblings incest. the Targaryen madness comes from the fact they constantly marry there siblings. Cercei isn't the way she is because her parents are cousins. she is the way she is because her father was a prick and raised her as a prick.

Jofferey was an evil bastard for many reasons A he is the product of incest between twins B he was raised by both cercei and robert both of whome were not the best of parents

and he was raised as a spoiled brat who was allowed to get away with everything he did

as for in real life. 80% of marriages in history have been between closely related cousins.

100% of marriages have been between distantly related cousins as we are all in fact cousins. genetic studies not only are we all distant cousins but no two people are no more than 50th cousins