In the spirit of “five out of four people don’t understand fractions,” I present these gems from math-challenged sign-makers:

How much more and less?

Forgive me for relying on logic here, but isn’t “more and less” a contradiction? Perhaps the writer meant “more or less,” a description that could apply to a penny and to a trillion bucks. At least that interpretation might be true.  “More and less,” on the other hand, could only mean . . . well, what could it mean? Ideas welcome.

And then there’s time. Einstein’s theory of relativity (but not math) is alive and well in NYC:

Long week.

The above photo is from a store named Muji, where a week lasts thirty days. One can only hope that the employees are paid by the hour.

The next sign proves that government is just as “innumerate” (the number version of “illiterate”) as private enterprise:

Weak on the definition of “week.”

If anyone tells you that government employees indulge in four-day weeks, especially in the summer, whip out this sign. In New York City, Restaurant Week lasts 26 days.