Julf
Facts are our friends
You can't, hence the complete pointlessness of these circular point scoring arguments.
We cannot bash people down for having an opinion one way or another we can only really state that our experiences are different and these are the reasons why. we believe what what we believe
And if humanity was still stuck in that box, it would be pretty bad. Fortunately we aren't. We have this wonderful system called The Scientific Method.
"Scientific researchers propose hypotheses as explanations of phenomena and design experimental studies to test these hypotheses via predictions which can be derived from them. These steps must be repeatable to guard against mistake or confusion in any particular experimenter."
Then of course we'll debate if the banana skin, or the ladder, or the scientist is the important part. We'll probably never ask why we are stuck in box with other monkeys, having a massive punch up over an imaginary or otherwise piece of yellow fruit ( or is banana technically) a vegetable?
How do you know if you haven't tried?