Not gonna lie, when I first saw the title of the topic I thought it was going to be about the sci-fi novel or the animation and tv show adaptations.
But in terms of this "three body problem" I actually came across an alchemy take on the idea and talked about it on reddit. Similar to your interpretation about the body, mind and feelings in alchemy a human being is composed of the body, soul and spirit. And just like you seem to have discovered I think the answer to the problem is knowledge. The more we learn and discover enriches all of these aspects to our being and allow us to improve.