An organism that’s not going anywhere of its own volition doesn’t need a brain. It doesn’t even need to know where it is. What’s the point? Being an immobile plant does have its advantages, however. Plants don’t have to get up every day and go to work because they’re already there.
On the other hand, if an organism has legs, wings, or fins, it needs a sensory system that will inform it about here and there, a make-up-its-mind system to determine whether here is better than there or there is better than here, and a motor system to get it to there if that’s the better choice – as it is, alas, when we have to go to work.
I think that learning can be described as movement; multiple journeys over a lifetime in the simultaneous physical, psychological, emotional and cognitive realms. I believe the process of inquiry provides us with opportunities to travel the most engaging pathways on these journeys, perhaps fortunately, the ones less travelled by.