Now you're probably wondering why this is here. It's to give you some idea of what infinity is. So, let's continue the comparison: imagine now not how many seconds have passed since the beginning of the big bang (well, since this theory of the birth of the universe is the prevailing one), but how many of these periods of radiation of the cesium atom have occurred during this time. Now let's remember that we have conventionally visualized each second of the life of our universe as a separate universe. Can you visualize such a multitude? Yes? Then let's go further. Now imagine how many periods of radiation the cesium atoms in general had in all the seconds of life of these universes and how many of these periods all these atoms had. Now imagine that all this diversity is one second, and all these universes are one atom. Now imagine that this atom, which consists of the enormous number of universes described, is one atom out of the whole number of atoms that make up the matter in our universe. Now imagine a number equal to the number of atoms in all these universes. That number is somehow hard to even visualize, let alone imagine, isn't it? Now let's move on to time periods. Imagine the life of these universes, from the Big Bang to collapse, that is, compression, explosion and expansion, as one second (the time of years of the supposed life of our universe is 150 billion). Now imagine all the seconds that make up the lifetime of our universe as a succession of alternating times of existence of all these hypothetical universes we have presented, from explosion to collapse, that is, as a process in which in every second of the existence of our universe, as if this gigantic number of universes is born and dies. Imagine how this incredible number of universes, each with trillions of galaxies, with billions and trillions of stars, suddenly multiplied by 31,500,500 (the approximate number of seconds in a year) multiplied by 150 billion (the time of years of the supposed life of our universe)? Such a peculiar fireworks display in hyperspace and hypertime. Can you imagine it? And I'll tell you – it's the most minuscule fraction of time that can be determined at all. Why? Because for eternity, any greatest value of time is equal to the smallest, infinitesimal period of time. You will say, "What is the meaning of this unimaginable amount of time, matter, and space for us? And I will answer you: someday this quantity will pass away and will turn into the very smallest particles of time, distance and mass, which we took for comparison. That's what eternity is for. And it is the same in any direction of the plane – eternal time and space.

Now let's go into another story.

The earliest known mass extinction, the Ordovician-Silurian, killed 70% of all species. Then the Late Devonian extinction repeated those numbers. Then the Permian-Triassic event wiped out 96% of all species. The situation leveled off with a Triassic-Jurassic episode that killed somewhere between 70-75% (it was caused by a 5 million year volcanic eruption!!!). Finally the Cretaceous-Paleogene extinction killed off 75% of all species, opening the way for dinosaurs to become museum pieces and humans to eventually rule the world. And why can't that happen again? It can, of course.

Now for another episode, world infinity.

Sixty years ago, to explain this paradox, Hugh Everett put forward a multiworld interpretation of quantum mechanics, according to which all possible states are realized in nature, only in different universes. Each collapse of the wave function (as if the end of one process) myriad times a second gives birth to a new parallel reality, events in which develop in their own way. Together they form a densely branching "world of many worlds", a continuously unfolding multiverse.