Beyond human perception, in the life cycles of universes, time is measured in a unit known as a kalpa.

How long does a kalpa last?

Imagine a block of stone, one cubic mile in size. Now imagine a man approaching this enormous stone and rubbing it, once, with a silk cloth. Every 100 years, the man returns and rubs the stone once again.

At this rate, the stone will be polished down to a tiny, smooth pebble long before a kalpa has elapsed.