Rhinos occasionally decide to experience distant locations. We mentally pack up, and head out. Perfectly Natural.

But what is also Natural are the parameters, the limits Nature sets for wandering. We press forward, and lo, there is a mountain range (or something else) in the way. We are stumped. At least for the moment.

Then We evaluate how badly We want to go. If it’s dynamic enough, We figure something out, even if it’s Impossible.