The problem with your request for speculation about the possibility that evolution is false is that you say nothing about what happened to the evidence for evolution. Are we supposed to forget it? Pretend it doesn't exist?
Why don't you ask us to speculate about the possibility that gravity is false? Or that Newton's laws of motion are false? There's as much evidence for them as for evolution. So okay, I'm pretending they're false. What happened to the evidence? Am I supposed to imagine that I actually floated around my whole life? That billiard balls never really reacted equally and oppositely into their pockets?
Now pretending that evolution is false, what happened to the evidence? Am I supposed to imagine a world in which HIV and the flu virus don't evolve every year? A world where breeding doesn't actually work and where characteristics are not passed on to offspring? A world where DNA is not actually the basis of heredity? A world where fossils do not fit into a nested classification hierarchy? A world where adaptive radiation never takes place?
Until you answer the question of what happened to the evidence, I don't see how your request can even be approached, let alone addressed.
--Percy