Infinity is already a fully formed which cannot be measure Aristotle claims that magnitude is not infinite. So, no matter how much finite magnitude is added to a magnitude, the total magnitude is finite. That is, we cannot reach infinity by adding finite magnitude. we use infinity a lot to find math problem but we also know it cannot be measure because it has no end. In my pic, we can measure the distance from the earth to moon but beyond that ( after that ) no body try to measure because its infinity distance (endless) and infinity is that which last forever.