JOJO fan!?!!?!??!?!?!!?!?
"detection" by checking for possible cycles or knots.
The answer here is Blind carbon copy (bcc).
The original recipients of the letter are unable to see (blind) who else receives a copy if those parties are on the bcc list.
Answer:
According to the latest CDC stats, these are the average heights for U.S. adult men based on age:
Ages 20 to 39: 176.1 centimeters
Ages 40 to 59: 175.8 centimeters
Age 60 and older: 173.4 centimeters
