Darwin's Tree of Common Descent is Useless to Applied Science

[Edgar]

@Haywood

I’m not an atheist, but I’m putting a great deal of importance on facts

Is Darwin’s tree of common descent a fact?

Why does your immune system only recognize foreign antigens in the context of self? Why is your response to tissues from another human so much stronger than your response to those from another species? What are the ramifications of these for bone-marrow transplantation, which saves so many children’s (and plenty of adults’) lives?

It’s painfully obvious by now that you are having a great deal of trouble telling the difference between an evolutionary explanation and a practical scientific use.

How is the theory of common descent used to improve the body’s immune system?
How is the theory of common descent used to improve the efficacy of tissue transplants?
How is the theory of common descent used to improve the efficacy of bone-marrow transplants?