>>>Redundancy!
>>>
>>>ICU Unit
>>>ATM Machine
>>>PIN Number
>>>Tuna Fish (What other kind of tuna is there? Do we ever say I would like a Bacon Pig Hamburger Cow?)
>>>VIN Number
>>>and ...
>>
>>I'll give you the ridiculousness of ICU Unit and ATM machine, since the acronyms are 'spelled out'.
>>
>>Tuna Fish is part of the vernacular, I'm afraid, as is Cod Fish.
>>
>>But PIN and VIN are generally said as a word, so I guess people want to distinguish between a pin (a piece of metal with a pointy end) and a PIN by putting the 'number' after it.
>
>I agree with Jim.
>
>PIN was doomed and became"pin number" from the very start, although there do seem to be more people dropping the "number" nowadays, I'm pleased to note.
>As for differentiating it from the metal artifact, I'd like to see someone "entering" a pin.
>
>As for ICU unit, I remember I got flak a few years ago for mentioning the redundancy of calling someone a "CIA agent"

There's no redundancy in CIA Agent is there? One could be a CIA filing clerk, or a CIA Human Resources Manager. So why not a CIA Agent?