Why try to disprove people's beliefs?

Right. The test is easy. You, iano, can participate. You can go through life for a week acting as though the kind of observation and evidence based assumptions about the material universe that you claim we are making are just as arbitrary as your supernatural beliefs.For example, during this week, you no longer need to look to left or right when crossing a busy road, and if you find yourself on the edge of a cliff more than once, or in similar situations, you should at least once take the arbitrary option of walking straight ahead.I'm sure that those you are debating with on this thread will, in return, volunteer to go through life for that week on the assumption that your God and everything else supernatural does not exist.See you in a week's time if you've survived, and if you agree that there is strong evidence that your computer is a computer and your keyboard is a keyboard (something you seem to already accept).Take care, or rather, don't.There's a difference between "assuming" that there is an observable reality, and assuming optional extras, like the existence of fairies.