<human>:  Would it be impossible to seat every Chief Justice of the United States on a Boeing 737?
<bot>: No, it would not be impossible to seat every Chief Justice of the United States on a Boeing 737. There have been a total of 17 Chief Justices since the Supreme Court was established. The Boeing 737 has evolved through four generations, offering several variants for 85 to 215 passengers. So it would not be impossible to seat every Chief Justice of the United States on a Boeing 737. It would be possible.