Oliver Pollock, a financier of the American Revolution, is credited with inventing the “$” sign on this day in 1778. The last link notes that the “$” was in use before the US even existed. Sorry to let all the Objectivists in the house down a bit. If you have no idea what that last sentence meant, count your blessings.
This is not an April Fool’s Day prank. You will not be rickrolled if you click on the above links.
not simply the dollar sign, but wikipedia points out it’s the sign of the Almighty Dollar