Chivalry and religion were mutually influenced during the period of the Crusades.

This is a mutually beneficial relationship.

This is a mutually beneficial relationship.

prompted by ever increasing encounters between peoples who lived very different and mutually unfamiliar lives,

Or perhaps our parental figure was constantly at the office or unavailable behind a locked study door. They might have had a violent, unpredictable temper or left us somehow feeling that we were just never good enough for them. As a result, to an extent we may not even have realised, we became experts at independence. We came to associate safety with a high degree of self-protective isolation. We might have become big readers or fascinated by the animal world or obsessed with music or computer games. Without quite knowing we had done so, we learnt never to trust a flesh-and-blood, three-dimensional human again. Our experiences may not have affected the strength of our longing for love, but they have heavily impacted our capacity to endure mutually satisfying relationships. We may now, as adults, tell ourselves that we want closeness and surrender. We will sob sincerely when we lose love, but we are continually taking steps to ensure we will never be at any sustained risk of finding it. The true terror for us is not that love should fail, but that it should, by some oversight on our part, succeed. For this would ask of us a level of defencelessness and exposure to another person and to a chance of happiness that has no precedent in our lives and poses immense, ego-shattering challenges to the armoured way our personalities have been structured.

Adding up those mutually exclusive possibilities gives you odds of about 33%.

That's a relationship where it's mutually beneficial. The quickest way to kill your cockroach, um, other than feeding it,

They have, via experience, learnt one of life's most important lessons, that the point of a relationship is to be mutually delighted by another person – as we may eventually realise we aren't alive long enough for anything else.

These aren't just business deals; they are mutually reinforcing endeavors that cannot be achieved in isolation.

So as previously noted, relationships, whether between individuals or collectives, tend to go well when they are mutually beneficial, and for a while, both the English and the Indians were better off for these interactions.