Headscratchers / Crisis on Infinite Earths

• At the very start, Harbinger asks the Monitor why he is picking and choosing only a select few heroes and villains; why not gather up everyone? The Monitor says it's part of his plan. But we never find out what that plan is, and why throwing everything possible at the Anti-Monitor wouldn't be a good idea right off the bat.
• The Anti-Monitor's anti-matter wave is shown to destroy universes gradually, one at a time. But if there are, as suggested in the comic, infinite Earths and infinite universes, it should take an infinity for the wave to destroy them all. (Not to mention that the whole parallel universe theory posits that new parallel universes are born every second.) So the story should never reach a point where only the Earth-1 universe is left. The only way the Anti-Monitor's plan would work was if he destroyed all the universes simultaneously and instantaneously. But that's not how the anti-matter wave is shown to work, and it would've also meant the Earth-1 universe was destroyed along all the others.
  • I recall someone once mentioning each universe destroyed made the Anti-Monitor stronger, so each universe was destroyed a bit quicker. Eventually the Monitor's Anti-matter waves just got fast enough to outpace universal infinity.
  • That's not how the mathematical concept of infinity works. No matter how fast the Anti-Monitor's antimatter wave gets, it will take him an infinty to destroy an infinite number of universes, especially considering that new parallel universes are born each microsecond. To stop new universes from being born and to destroy all the existing infinite universes he would need to destroy them all at once. Otherwise the surviving universes would keep on spawning new universe, which themselves would also spawn new universes, which would spawn new universes, etc etc, and the Anti-Monitor's task would never end.
  • It was later said somewhere that there were only around 3,000 or so universes. The "infinite earths" bit is just hyperbole for a cool title.
  • While the anti-matter wave is shown destroying universes gradually and one-at-a-time, it's also shown traveling through time, attacking universes at many different points in their history simultaneously. That makes the passage of time (even of an infinite amount of time) rather unimportant.
• How was Alexander Luthor Jr. be able to safely place Lois of Earth-Two into the "paradise dimension" if he no longer had his powers at the time? He only regain his powers after the surviving Earth merged as one, which apparently had a different outcome for his powers.
  • Maybe he secretly build a machine that can open to that "paradise dimension" somehow. He may have charged it with his own power before losing them. And after seeing Kal-L saying good-bye to his Lois knowing she would be erased, Alex used the machine on her.

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