The instinct to trust others is very strong in our species. I think this is because we needed to trust one another to survive thousands of years ago. The thing

The instinct to trust others is very strong in our species. I think this is because we needed to trust one another to survive thousands of years ago. The thing is, we lived in small groups where survival was directly dependent on the people immediately around you. Now, we have to "trust" far-off men who have not proven themselves trustworthy in the same way. And yet, our instincts to trust persist. There appear to be few of us who are inherently mistrustful of others; in recent times, that instinct has proven to be quite beneficial.