There's a big difference between a typo and a misunderstanding.
Absotively and posilutely!
Violists and cellists the world over are now converging on your house to beat you about the head with their respective instruments. (The cello is the one that will knock you unconscious. The viola you may be able to avoid.)
Having played in a symphony a few years I think I know the difference, esp. since I had to play sheet music written for a cello and transpose from F to B flat because they didn't have a lot of music written for a bass clarinet which surprised me in a symphony.
However, for the purpose of the point I was making, most people don't know what a viola is in the first place and using "CELLO! THERE IT IS!" to explain why "VIOLA! THERE IT IS!" was a typo made it clear with an instrument they most likely knew and was close enough for government work.
If that offends the violinists, they can take their stringed instruments and go pluck themselves :)
Going a little off topic but I was good enough I was offered a full music scholarship but temperamental nutjob maestros and musicians is one reason I dropped that career path and the poor pay for being a skilled professional was the other reason. The computer keyboard is where I decided to make the most profitable music ;)
My best bud in school took one of those scholarships and was still going to school at 40 to complete his doctorate and now has tenure teaching music at some university in Iowa making guaranteed low wages and pension for life.
Funny thing since this is a spelling thread, my best bud in school and myself tied as the 2 best spellers in school, all grades, and never lost to any challengers. :)