Explain what Kant means by saying something is a synthetic a priori truth. Give an example

Question

What will be an ideal response?

Answer 1

Synthetic a priori truths are synthetic because they are not mere tautologies, not merely trivially true, but true of the world we experience. They are a priori because, like all necessary truths, they are prior to experience—that is, we don't know them based on experience. Indeed, the reverse is true—experience is possible for us only because we impose forms and categories on it. If we did not, we would not have anything we could call experience. An example is the principle of universal causality—the concept that all events have a cause.