On: SUVs more dangerous to cyclists than other cars, s...

[TylerE]

We really need to start using gallons per distance instead of distance per gallon.

The former doesn’t distort the proportion.

Going from 10mpg to 20 is massive, literally double the efficiency.

20 to 30 is still a pretty big deal.

30 to 40 is noticeable, but not really a huge deal.

40 to 50 is barely above the noise floor

[analog31 → TylerE]

There are all kinds of interesting "reciprocal" units that lead to confusion. Another one is price-to-earnings ratio, which goes through an anomaly at zero, even though earnings-to-price ratio is a nice smooth function.