I do wonder why the paleontologists are in charge of figuring out the anomalies though, even if they're useful for their expertise with the dinosaur invasions. You'd think that they'd have drafted in a physicist or two by now.

Oh, you and your pesky earth-logic! Don't you know that all forms of science are completely interchangeable? (See under: Dana Scully)

And yes, it took me a while to realize that time traveling was roughly as much trouble for Helen as walking up to the corner store for a candy bar and some milk.