This is exactly the point I was making. We can never be absolutely sure. The most we can say is that, as far as we know this is true. If something comes along at some future date which contradicts what we "knew" to be true, our knowledge is wrong and must be changed or discarded.
Exactly.Absolute truth is the destination. The path is laid with broken perspectives and subjective truths. And you never reach the end. Something like Tantalus reaching for the apple that always moves beyond his reach.