The always go down, never up. I know this is narrow, but the Law of Gravity decrees it so, and science is very narrow. Mathematics is also very narrow-minded. The sum of two plus two is four, never three and a half. That seems very narrow, but arithmetic is not broad-minded.
Geometry is also narrow-minded.
It says that a straight line is the shortest distance between two points on a plane. That seems very dogmatic and narrow-minded, but geometry is intolerant. It seems that it is very narrow-minded. If it were, ships at sea and planes in the air would be in danger. If you should ask a man the direction to New York City and he said, 'Oh, just take any road you wish, they all lead there,' you would question either his sanity or his truthfulness.