Unless you're in Congress or deep in the trenches of bureaucracy, you probably think that Americans like to get right to the point. Turns out, the founding fathers felt the same way. The U.S. Constitution has only 4,400 words, the oldest and shortest Constitution of any major government in the world.
Also on the note of perhaps working too quickly, someone forgot to consult their spell checker before writing out the state of Pennsylvania, writing as "Pensylvania." It's not the only spelling error, but certainly the most noticeable, being positioned right above the signed names.
The guy who helped write out our basis for laws and a government was Jacob Shallus, a Pennsylvania General Assembly clerk (it's unclear whether it was actually him who misspelled his own state). He was paid a decent sum for the job, a whopping $30. In today's money, that's worth over $700. Not bad for a day's work.
The Constitution was signed on September 17, and is recognized by Constitution Day—though most Americans don't get the day off from work.
The oldest person to sign it was Benjamin Franklin at 81, who required assistance. The youngest was Edward Rutledge, at just 26.