“Light travels in straight lines.” Yes, if observed from a science that measures straight lines. No, if observed from within light, within the world, within gravity or within perception. The statement is meant to be a universal truth, against which all other truths are subjective. It is, however, also subjective. You cannot see light. You see seeing. It lights you. That is not a straight line. That is all at once. A science built from this would be a science of presence.
Reeds Reflecting in Big Bar Lake at Dawn