I mean, 16 ounces in a lb, 14 lbs in a stone etc. How many farthings in ten shillings? “If a pound of potatoes cost twopence ha’penny, what weight of potatoes would you get for three guineas?” omg, and what was the sense in LSD being pounds shillings and pence? Perhaps their lives were not complicated enough and they needed a challenge. It makes Sudoku seem easy-peasy.