London UK, and Zurich Switzerl
"Are you in a universe which is ruled by natural laws and, therefore, is stable, firm absolute- and knowable? Or are you in an incomprehensible chaos, a realm of inexplicable miracles, an unpredictable, unknowable flux, which your mind is unable to grasp? Are the things around you real or are they an illusion? Do they exist independent of any observer or are they created by the observer? Are they the object or the subject of man's consciousness? Are they what they ARE or can they be changed by a mere act of consciousness, such as a wish?
The nature of your actions- and your ambition- will be different, according to which set of answers you come to accept."
Ayn Rand, Philosophy: Who needs it.
I myself think the answer is kinda self-evident. For the light in the fridge to NOT go out when you close the door (provided the wiring isn't broken or some such earthly reason), or for the thrown stone to NOT fall to the ground, the laws that hold this Universe together would have to change. You don't need to be able prove that the stone will always fall by eternally throwing it. You need only understand WHY it falls. Gravity. As long as there is gravity the stone will fall. As long as the Earth will move around the sun there will be gravity. And so forth...
Proof is often gained by repetitious tests, yes. But it isn't just proof cause the stone falls; proof is the understanding WHY it falls. The understanding of what other laws an occurrence is based upon. Proof is in fact the reverse of creation: You have the finished product and you break it up into its fragments to understand its makeup.