But we rely on strangers all the time for our survival. Most of us don't make our own food and bakers aren't necessarily altruists. We even give our credit card details to businesses over the internet. The reason for this is that we have well established rules and laws that help us to get over our mistrust of strangers so that we can still benefit from cooperation. These rules are not natural, but they form the basis of a free, capitalist society. This means that it is natural for there to be a tension between our intuition and a free market system, but we try to live with both.
this is the article responsible for this post and here is Hayek who is quoted in the artice:
If we were to apply the unmodified, uncurbed, rules of the micro-cosmos (i.e., of the small band or troop, or of, say, our families) to the macro-cosmos (our wider civilization), as our instincts and sentimental yearnings often make us wish to do, we would destroy it. Yet if we were always to apply the rules of the extended order to our more intimate groupings, we would crush them. So we must learn to live in two sorts of worlds at once.