All I'm learning from this thread is that some people see infinite regression where others see tautology. edit: what I mean: Person 1: "What if we're just mea

All I'm learning from this thread is that some people see infinite regression where others see tautology. edit: what I mean: Person 1: "What if we're just measuring the color of the sky? What if we're just measuring blueness? What if we're just measuring a wavelength of light? ... ..." Person 2: "The sky looks blue."