[wruza]

Why should it be hard to grok? Selection just happens, it doesn't "care" if it's natural or based on human preferences. Even human-free selection doesn't guarantee a long run since genes can paint themselves into a corner (see natural extinctions). Iow, it's what it is.

[TZubiri]

Pretty sure natural and artificial selection have distinct properties. As do self selection and symbiosis, and even symbiosis/parasitism.