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Narrator: A known trait of humans is to travel in these... pack-like groups. They are a social race, the female set in particular. Sometimes there is a very specific screech from one group to another.

However, there is another trait of humans... this exclusion of one or more of their race.

(The screen flashes to a high school lunch table, where one one side is a great crowd, while on the other, a child sits alone.)

Narrator: Of course, some humans are adept at naturally breaking from the pack. Yet, in a manner most strange for such a social species, they encourage such separation. Admittedly, some appear to do it more roughly than others. For example, the screech that is typically a sign of acknowledgment from one group to another, sends a negative message towards the lone extra. Also, hoots and jeers are taken as common sport, and any attempts by higher-ranked members of the species are met with no adjustment whatsoever or even anything resembling remorse.

Scientists find this contradictory communication sequence illogical.

There have been many attempts to explain it, both by the creatures themselves and our own scientists. Yet, just like the circles the groups of humans tend to linger in, they keep coming to a very nonsensical answer.

It is just human nature, it seems.