“…However, once the B and C occupants explain what hashappened, the A occupant’s bewilderment will be somewhatlessened. What happens to the A region also happens periodicallyto the other regions, and such freezes are verified by people in theunfrozen regions.” (92)• “However, the more observant members of this world begin tonotice a certain regularity to the freezes: A freezes every threeyears, B freezes every four years, and C freezes every five years. From this information they can work out, by elementaryarithmetic, that every sixty years there is a global freeze: A, B andC are frozen simultaneously for one year.”