How recurrent laryngeal nerve proof evolution?
if this recurrent route is because of evolution, why some mammals have two right and left and some have one recurrent nerve? (Like giraffe)
why in giraffe right nerve of 6th arch don't recurrent?like human?
I think recurrent isn't evidence for evolution so if that was it recurrent  in 2 right and left routes
Thank you for your answering.

Sorry no one seems to know the answer to your question.