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 These are wireless bluetooth headphones. I find the fact that they do... um... have a wire... but it just goes around in a circle adorable. 

This must be how my dad felt when I used to borrow his old reverse Polish notation calculator then programed my TI to do arithmetic the same way.

(Also if it's called "reverse Polish notation" wouldn't that imply "Polish notation" is just doing it the normal way?)

https://cdn.masto.host/sauropodswin/media_attachments/files/111/174/611/347/891/311/original/01eb633b59b237e0.png 
 @134318c2 

Polish:  * A B
Reverse Polish: A B *
Arithmetic: A * B 
 @134318c2 polish is lisp syntax. Reverse polish is forth or postscript syntax 
 @134318c2 The wire under the headphones actually provides a convenient place to put controls, and makes it less error-prone to take the headphones off your ears, but keep them on your head. It's also good for loss-prevention.