Let's make totally outrageous claims!

[aaa]

How can you differentiate "odd" Lemming behavior from regular Lemming behavior? That is, what kind of function is it?

Well,
Lemming fuctions by his own rules, therefore if he follows his rules he is behaving as a lemming.

Thus,
If Lemming ceases to fuction by his own rules then he cease to act as he does.

But,
If Lemming truely fuctions by his own rules then there would be no reason to follow his own rules and he would cease to be fuctioning by his own rules whilst following them at the same time.

And,
This leads one to determine that if one is to study Lemming's behavioral patterns that they can then trancend reality by entering into a paradoxical loop, that propels them into an alternate dimension.

Then,
When one who studies Lemming enters that alternate dimension they will then realize that they cannot possibly have reached said alternate dimension because the post-transit flux of the Lemming cycle would have produced a false negative reaction that would instead close the alternate dimension forever.

^
|
| That makes absolute sense.