I went to an outdoors exhibition at the NEC a good few years ago, I had just retired. Got invited to do a quiz that resulted in an invitation to a walk leaders selection course. Took place in the Howgils; one of the tests involved sitting us down by a stream and each member of the team showing a way to cross. Nearly every one tried to suggest a way immediately in front or just down stream, where there were larger stones. Across the stream the ground rose very steeply into a gully and ridge.
I was looking a little upstream, where there were a line of small flat stones diagonally across the stream, it hit the bank at a shallow level, deceptively hidden, unless slight trail through the grass to the steep side of the gully had been noticed.
All the party seemed to focus getting strait into the bottom of the gulley, but behind us there was a rather offended looking ewe. It was just coming to my turn to offer a suggestion, when an outraged bleat came from behind us, and a very impatient sheep did a double skip across the diagonal stones, almost flew into the rising side of the gulley showing the neatest rising traverse that put her into the perfect spot to climb the gulley.