An analogy for obvious. This was originally coined by a pharmacy professor at the UT Health
Science Center at San
Antonio. The professor was referring to Phineas
Gage, a 19th century railroad worker, who suffered a freak accident when an explosion catapulted a large piece of iron through his skull and into his frontal lobes. An injury that was anything but subtle.
Professor: "what'
s an antibiotic used for?"
Student Bob: "Uh, there is an inhibitory, Uh, upregulation and, Uh half life ..."
Professor: "An antibiotic kills bacteria. Bob, the answer was like a
nail in the
head and somehow you completely missed it"