On the heels of my question about the Order of Operations, I ask this: who decided that we should round up when something is in the middle? Why does 1.5 round up to 2? Why couldn’t it round down to 1?
While this may sound stupid, I’m looking for a mathematical rule that was arbitrary. I’m looking for a rule that’s not based in mathematics, but is instead rooted solely in a need for consistency.
Is this such a rule?