Does infinity come in different sizes?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific conceptsAre there different sizes of infinity? Apparently there is an infinite series of prime numbers, but also an infinite series of “normal” (non-prime) numbers; but at any given time there must be more normal numbers than prime numbers, however long you count for.Ray Crabtree Continue reading...