yes, but that is an ever fleeting goal. nobody has 'full knowledge' of anything. no... that's exactly my point nu. you can't anticipate all future evidence. you can only draw conclusions based on current evidence. that's what scientists do. that's what you're doing. so your idea of a concrete truth is in fact just an observation with a lot of evidence backing it up. that's what people call a scientific fact. which is what you're apparently suggesting can't be concrete.