Also, her obvious corruption. Her and her husband make waaaaaaaay above average on the stock market due to her insider knowledge. But I’m sure that never affects her policy positions.
Imperial is definitely worse, but the number of teaspoons or tablespoons to a cup (48 and 16) is useless information. Do you measure out 50 grams one gram at a time? Do you regularly use the fact that a kilometer is 100,000 cm?
The most common way to sense velocity is to have two switches at different levels and calculate the delta to see how fast it moves between them. This does require precision, though.