OK. Let’s hear all about the many intermediate stages of testicular migration. Please note that I am not talking about lack of intermediate evolutionary steps in general; obviously they exist. But this testicle issue involves all sorts of linked and profound changes. The critter has to develop warm-bloodedness (a big step in itself) in order for external gonads to be necessary or desirable. The testicles have to move, which involves changes in many internal structures. A canal has to form to convey them out of the body cavity without leaking other structures. All the plumbing and blood supply to support the new testicle location has to be arranged. A scrotum has to be created where nothing was before. It’s not as simple as the facile arguments of the “pop” evolutionists suggest.