One thing I never see mentioned is the awkwardness of the metric names. The older measurements are all one syllable, while their metric replacements are often t

One thing I never see mentioned is the awkwardness of the metric names. The older measurements are all one syllable, while their metric replacements are often three or four. mile -> kilometer inch -> centimeter pound -> kilogram The only one that comes out even is ounce -> gram. Obviously it's not a huge impediment since many other countries got past it, but I'm sure it just adds to the discomfort people have with it.