"The sun will rise, the sun will set.  That is what we call it. But the sun isn't moving, its the rotation of the earth that makes the sun "appear to rise and set"   This is an example of a "fact" that really isn't.  Even though we will all continue to call it a sunrise or sunset, we know it's  not. Similarly, we know that although Mr. Schwab says things that have an "appearance" of  fact, we know the reality is sometimes  much different. But saying the sun set is much more poetic than saying the earth has rotated...