Reasonable speculation is reasonable. Supposing that belly buttons exists so we could store lint in them is not reasonable. It may well be that we have opposab

Reasonable speculation is reasonable. Supposing that belly buttons exists so we could store lint in them is not reasonable. It may well be that we have opposable thumbs to handle tools better. I can't prove it, you can't disprove it, perhaps we need more evidence. But making suggestions that have a rational basis and that may have some explanatory power is perfectly reasonable and if you think there is a better approach, please tell us. That is what I meant by requesting your alternative ideas. > But that's not why Bob added bacon to his cheeseburger today Maybe it is.