Absolutely. It was several hundred years ago that that French philosopher (Pascal? Descartes? Jacques Tati?) fell into the goldfish pond at the Petit Trianon and shouted out “I sink! Zerefore I exist!”, and was pulled out by a pragmatical Englishman, who said “You wotten fwog-eating Fwenchman, jutht for thaying that you have another think coming” and pushed him back in. It is on record that Pascal, Descartes et al. did, in fact, exist, or at least, thought they did. So do we. In time, we may have another think coming.