Citizens of Mathematics-Land carry the Rapier of Proof at all times, and citizens of Physics-Land carry the Six-Shooter of Experiment, and anyone committing an offense or faux-pas meets swift and merciless punishment from his peers. Philosophy-Land is a weapon-free country, whose citizens can be rude to each other without risk.

The worst thing is that the rapier does work in Philosophy-Land a lot of the time. It's just that all the people who are especially vulnerable to said rapiers tend to emigrate. Those remaining don't tend to have the courtesy to event grant touché when the rapier is sticking out of their chest, nor to adjust their technique.