Complex is the opposite of simple. If there is 50 equal elements communicating between them there we have a complex system.
This is important because a thousand ants behave totally different from an isolated ant.
You just can't study an ant and expect to understand the nest or anthill.
Psychologists try to make it all the time and it is totally wrong: They studied isolated rats in order to understand addiction to drugs and they did not understood that they are social animals which travel 20miles-30kms each day.
So they jailed the rats in a cage, because it was easier to study them that way, and extracted conclusions that were totally bogus for human beings. Those conclusions were the basis for the US war on drugs.
Here they do the same. They make a very simple experiment, and extract conclusions about the whole system. In Africa, when humans whatever,more fiction than science.
It is ok to make fiction and speculation, but you should always differentiate what we really know with high degree of confidence from what we do not.