As regular readers know, I can mention any idea whatsoever and a dozen of you will leave comments telling me who already thought of it, or who wrote the fascinating scifi book with that plot. This post is a test of that phenomenon.
Today's hypothesis is that the evolution of sentient creatures is influenced by their aspirations. In the simplest example, if a creature wishes its entire life that it could reach tasty fruit that is higher in the trees, it slightly increases the likelihood that its offspring will be taller, or have longer necks, or be able to leap higher, or climb better. In other words, the longings of the parents affect how their genes get passed on.
I'm not saying the hypothesis is true or false, just verifiable. And it doesn't conflict with the fact that some traits improve survivability of the species.
Who already thought of that hypothesis, and who wrote the book? (Don't say Lamarck.)