How? Why? Who?

Up until a few hours ago, Nigel had been convinced that brain transplantation was well beyond the realm of current scientific knowledge. Of course, the evidence in front of him plainly showed that it was very possible indeed. He rattled off some immediate scientific problems. The first was the optic nerves. Of course, he still needed his glasses, so maybe they had transplanted his eyes with the rest of his brain. Then there were the countless neural connections to other parts of the body. He had no idea how that had been accomplished. There were predictions that the behavior learned in one brain wouldn’t know how to deal with the differences of a new body. While Nigel had been shocked and was even temporarily disoriented by his new female body, he adjusted fairly quickly. Of course, it was just a theory. What if the brain could adjust very quickly to the differences of a new body? What if Nigel was being used as some sort of a test to prove this? It soon shifted from a question of how to one of why...and who...