I prefer 'what is likely and possible?'
If I pondered every 'what if?', I'd be considering every superstition, crackpot conspiracy, religious text and urban myth and I don't have a thousand lifetimes. Instead, I automatically filter based on credibility of source, detached style of argument, consideration of opposing evidence and arguments and explanation of how cause generates effect. I'm the kind of person that notices that explosions don't go 'boom' in space. Next, I apply Occam's Razor. Only then, will I wonder about something that is likely and possible.
In this case, the dream prediction fails at 'consideration of opposing evidence and arguments' and 'how cause generates effect'.
