"How Can I Be Sure of You"--Harry Nilsson

The other day a friend of mine said, he said the sun's not really yellow. He said, he said the sun is really red. I said my friend, what do you mean? You read that in some magazine. Next thing you'll say the earth's not green. How can I be sure of you anymore? In a world that's always changing, rearranging. Always changing, changing. I said my friend, how do you do? And what you're saying isn't true. Next thing you'll say the earth is blue. He said my friend, you're in a dream, and things are never what they seem. No, things are never what they seem. How can I be sure of you anymore? In a world that's always changing, rearranging. Always changing, changing, changing...

The world feels like that sometimes. Like the truth is absolutely subjective, or at best elective.