Optics and Perception

Why take a scientific term like “optics” and start using it to replace an ordinary word like “appearances” or “perception?”

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Stint and Stent

It’s not uncommon to see comments like these in web postings:
The artery was far too small to fit a stint.
Initially, they put in a stint and ordered an ERCP to determine the nature of the mass causing the blockage. 
They went in, got the stone, and put in a stint so any future stones would just

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