Ballpark — September 6, 2026

Number of keys on a standard piano

88 keys

This has been the industry standard since the late 1800s.

Years since the first moon landing

57 years

Neil Armstrong and Buzz Aldrin spent 21 hours on the surface.

Average number of times a human blinks per day

~14,875 blinks

Blinking keeps the eyes lubricated and clean.

Percentage of US adults with a college degree

~50%

Includes both associate and bachelor's degrees.

Average hours a lightbulb lasted in the 1920s

~2,500 hours

The Phoebus Cartel later limited lifespans to 1,000 hours.