It is said that the blazing fire from the mouth of Saṅkarṣaṇa rages for one hundred years of the demigods, or 36,000 human years. Then for another 36,000 years there are torrents of rain, accompanied by violent winds and waves, and the seas and oceans overflow. These reactions of 72,000 years are the beginning of the partial devastation of the three worlds. People forget all these devastations of the worlds and think themselves happy in the material progress of civilization. This is called māyā, or “that which is not.”