Dizzy is a sensation. It’s there because we acknowledge its existence. If you say you’re dizzy, I believe you, though it isn’t measured. Folks measure brain wave activity, though what it’s like is understood first hand. We’re inclined to have faith in another person’s assertion that he or she feels a particular way, but talk of fantastical feats aren’t taken as truths (depending on who is asked).
I climbed an invisible ladder to Mars.
03/15/12 He thought someone might take his picture.