Is the Earth round or flat?
Are there a multiple, if not infinite, amount of parallel universes?
What should humanity colonize first?
Is water wet
If your child doesn't get the flu shot and injures another, should that parent go to jail?
Is psychology a good subject?
Should there be a fine for not wearing a seatbelt?
Even though catalytic converters have turned fossil fuels into pure, drinkable water.