Many many years ago, at the age of 19, and a student teacher, I made up the numbers on a Geography field trip to the Lake District. Although not a Geographer, I was lured by the expectation of boozy evenings with mates in some isolated pub up in the hills, and sure enough, such a hostelry was found, frequented only by morose Cumbrians who nursed their pints in gloomy corners of the bar. As students do, we were a bit noisy and full of ourselves, and one old man sitting near the fire, glared and said (in a broad Cumbrian accent), "What you'm all studying then lads?" He accepted a pint, and after ruminating for a few moments, announced he would ask us a few questions about Cumbria. "Right, " he said, "if you'm be on the mountain track an you'm see lots o figgy type lumps on't ground, what does that tell you?" All the geographers knew that this was sheep sh it and the old guy nodded, well impressed. After a moments thought he tried again. "Well, if you'm see lots o' currants all over't ground, what's that then?" The geographers confidently identified them as rabbit droppings.and the old man nodded approvingly. After a moment, he looked up and went for the kill. "You lads know what a batholith is?" There was a stunned silence among the geographers, and various, wrong guesses were made, until in the end, they gave up. "It's a rock outcrop," said the old guy. He took a sip of his beer, and muttered, loud enough so his mates could hear him, "You lads know more 'bout sh it than Geography."