We do affect you.
I'm surprised the primitives still don't get it.
It's all in the interests of science and other knowledge; observation, examination, and analysis.
How do the primitives react under a certain circumstance (such as being provoked into something), and why do they react that way?
I've always considered Skins's island the internet version of the old-fashioned "chemistry sets."
And it's just as much fun too.