another very good part, Jenni!
Dr. Klein' explanation it's absolutely understandable, and I loved how he went from Superman to Clark: even if he's often an absent-minded professor, he's also pratically a genius, and perhaps a Conan Doyle' fan too! (<<when you had eliminated all the possible explanations...>> I don't remember the exact words)
I hadn't thought about a physical exam for *CLARK* to make sure HE hadn't picked up any Earth diseases, but it's perfectly logic.
I look forward your next post, to know how Lois and Clark are going to mange to remain a family, and what's happening with the new Lord of House of Nor!
Simona