the.com/carelessness

the slow leak that sinks ships nobody bothered to check for holes.

means the state of not paying enough attention or taking enough care, so that mistakes, damage, or harm slip through.

from A built-up English word: "care" comes from Old English "caru," meaning sorrow, anxiety, or burden — the heavy weight of worry, not yet the gentle attentiveness it later took on. Add "-less" (Old English "-leas," "free from, without") and "-ness" (the suffix that turns a quality into a thing), and you get a tidy stack: "without-care-ness." The shift in "care" from grief to watchfulness is the quiet history here — once you stopped fretting, the word came to mean you also stopped looking.

war record
loose lips sank ships in WWII propaganda
legal name
called negligence when a courtroom gets involved
costly typo
a misplaced hyphen doomed NASA's 1962 Mariner 1
oddly creative
penicillin came from a forgotten, contaminated petri dish
for instance

deepwater horizon oil spill — bp rig explosion in gulf of mexico, 2010, released 4.9 million barrels of oil

chernobyl nuclear disaster — soviet reactor safety test gone wrong, ukraine 1986, killed thousands and contaminated 116,000 square miles

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