I think that something that throws people off is that in one of the last scenes, Lois says something like, "I'm sorry my father couldn't find anything wrong with Dr. Klein's data."

Now, his memory was wiped before he could tell them anything, so one has to wonder how she knew that. After all, earlier, Sam had said that the figures weren't right.

I tend to take the approach that Dr. Klein was somehow wrong. evil After all, he's a scientist, not a fertility expert. It's entirely possible that his results could be flawed, deliberately sabotaged, etc.

Laura (who loves writing next gen just so she can play with a different dynamic)

“Rules only make sense if they are both kept and broken. Breaking the rule is one way of observing it.”
--Thomas Moore

"Keep an open mind, I always say. Drives sensible people mad, I know, but what did we ever get from sensible people? Not poetry or art or music, that's for sure."
--Charles de Lint, Someplace to Be Flying