In countries with a public health system (eg not the USA), the health system consumes a large fraction of the taxation income.The relevant difference between the US and the UK is that neither of them allow duelling.
- Dueling will only increase load on the health system, since it your taxes that pay to patch up the people who partially survive the dual.
- If there is no real public health system (eg the USA), gun violence is rife, and people are encouraged to get more guns to protect themselves from the idiots with guns. There is no incentive for the government to do much about it, because repairing the damage doesn't really come out of their pockets.
It was ironic to hear Donald Trump criticizing the mayor of London on a night when 3 people were killed in stabbings, when the homicide rate in New York was twice as high (you are much more likely to die from a gun attack than a knife attack).
There is a branch of mathematics called Galois Theory, applied in 4G mobile phones and cable TV, among many others. Galois documented this in a letter at age 20. He had foolishly challenged a soldier to a duel, and died of gunshot wounds received the next morning.
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