For an analogous case, consider Lee Smolin’s “Life of the Cosmos” hypothesis. That posits natural selection between universes—and black holes as the birth canal for new universes.
That seems literally incredible—since black holes have no insides. However, the rest of the logic of Smolin’s hypothesis does not depend critically on the origin of the new universes—so if you replace “black holes” with “basement universes” the hypothesis becomes much more credible.
For an analogous case, consider Lee Smolin’s “Life of the Cosmos” hypothesis. That posits natural selection between universes—and black holes as the birth canal for new universes.
That seems literally incredible—since black holes have no insides. However, the rest of the logic of Smolin’s hypothesis does not depend critically on the origin of the new universes—so if you replace “black holes” with “basement universes” the hypothesis becomes much more credible.