<span>These experiences are not limited to one brain pathway, but several. The ability for us to recognize faces is but one part of our overall experience, and shows that there are many systems that interact when performing even the simplest of tasks.</span>
I think that because everyone else has their own brain that is active in their own way meaning that some are altruistic due to the way they whereas others are not as much because they are thinking differently
the answer is popular sovereignty. hope this helps :)