Nothing better to start the day with than a thought experiment: Hold out your hand at shoulder height, close your left eye, and line up your thumb with a distant object. Hold that position and switch eyes, so that your left is open and your right closed. If everything unfolded as it should, then your thumb should appear to slightly shift in its position, seemingly teleporting between two distinct points in space. But your thumb isn't actually moving, it's just your perspective that's changed. This shift in perspective is called a 'parallax', and it's nothing less than a metaphysical can of worms, seeing as it raises the problem of the incommensurable nature of different perspectives. Which perspective is the 'right' perspective? Which one accurately conveys the thumb's place in space?
"Reality is merely an illusion, albeit a very persistent one." ― Albert Einstein