the.com/pen

mightier than the sword, cheaper than therapy, and never out of opinions

means A handheld instrument that lays down ink to write or draw; also a small enclosure for animals or, informally, a prison.

from The writing tool comes from Latin 'penna,' meaning feather or wing — back when a pen really was a sharpened quill plucked from a bird, dipped in ink and scratched across the page. The other 'pen,' the animal enclosure, is a separate Old English word ('penn') of uncertain root, and the slang for prison is simply a clipping of 'penitentiary.' Three pens, two unrelated families, one humble spelling.

space problem
NASA spent millions; pens leak without gravity
ballpoint debut
patented 1888, perfected for WWII pilots
treaty maker
wars officially end with signatures, not bullets
global output
billions of ballpoints made every single year
for instance

parker 51 — american pen launched 1941, sold over 20 million units, revolutionized ballpoint design

kaweco liliput — german pocket fountain pen from 1912, world's smallest pen at the time

lamy safari — german polymer pen designed 1980, best-selling fountain pen globally with millions sold

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