Fewer or Less?

From Brian P. Cleary

Fewer vs Less? It's "fewer" ice cubes, but "less" water. "Fewer" is for countable nouns. Fewer people. Fewer apples. Fewer options. "Less" is generally for non-countable nouns. Less water. Less snow. Note that if you gave a unit of measurement to the water (gallons) you could say, "fewer gallons of water."

A pedant is a person who overemphasizes rules or minor details.