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Uh huh... feet is more useful for aviation than meters. 1,000ft is a comfortable vertical separation between planes and it's a nice round number instead of ~300m.

As for nautical miles and knots, one nautical mile is equal to one minute of latitude making for easier navigation when you're traveling over significant distances of the planet.

I'd hardly call it stuck in the past but rather the right units for the application at hand.

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So by that logic we should mix metric and imperial whenever it rounds to a nice number. Pretty awful argument.

1. No one is mixing metric and imperial here. All planes use knots, nautical miles, and feet. No one is measuring altitude in meters in one location and then feet in another.

2. I guess we should just use metric for every application even when it doesn't make sense to do so then.

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