The full source sentence is:
This captures nicely some of the logic of evolutionary theory – a piece that many people seem to not appreciate – namely that evolution cannot “see” what you feel; it can only “see” what organisms do (seeing in this sense refers to selecting for variants that do reproductively useful things).
In the domain of evolutionary theory, traits or variants are often said to be 'selected for" or "selected against". A variant is said to be selected for if organisms with that variant leave more offspring, so that they are better represented in the next generation. It is also common to write of "selection for X" where X is some trait subject to natural selection. The "for" is commonly used, because it is meaningless in this theory to speak of selection without indicting what is begin affected, positively or negatively by the selection, and because such selection changes frequencies in a population, rather than making absolute choices from a list or menu.
Here it seems that the model of evolutionary theory is being used as a metaphor, but the characteristic terminology of that field is being used.