The ceiling method matches with the expectation of how much time is left when the major digit changes, which is the same as how we do countdowns verbally in Eng

The ceiling method matches with the expectation of how much time is left when the major digit changes, which is the same as how we do countdowns verbally in English. We say, "5, 4, 3, 2, 1, 0", not "4, 3, 2, 1, 0, done".