Wel's Observational Propositions

No factual proposition can ever be proved from an experiment. Propositions can only be derived from other propositions that cannot be derived from facts. One cannot prove state from experiences no more than by thumping the table. This is one of the basic points of elementary logic, but one which is understood by relatively few people,. even to day. So justificationism, we 're thinking, was wrong, because induction doesn't work, right? That if i view swan white, second swans white, third swanes white, i can never prove from that all swan's white. And if that's the model that you think that science is supposed to follow, then, like way back