My charitable interpretation:

“Less and less possible” means something like “more and more difficult to achieve”, or “a smaller and smaller occurrence in the multiverse”.

My charitable interpretation:

“Less and less possible” means something like “more and more difficult to achieve”, or “occurs less and less often in the multiverse”.

My charitable interpretation:

“Less and less possible” means something like “more and more difficult to achieve”, or “occurs less and less often in the multiverse”.

My charitable interpretation:

“Less and less possible” is a loose way of saying something like “more and more difficult to achieve”, or “occurs less and less often in the multiverse”.