Some jobs are intended to be performed by humans. Humans work for as long as necessary, in any convenient location, in order to complete tasks which only those particular humans can perform.
Some jobs are intended to be filled by paperclips. The function of a
paperclip is to be present in a particular place during particular hours of the day, during particular days of the week.
When Humans want Paperclips, they look for them in specific places - e.g., in
a little bowl on the desk in the office. It's annoyingly inconvenient if the clip is not exactly where it's supposed to be, right when it's needed.
Paperclips don't do lunch - not because their job is so vital, but because someone may need them - now.
As for what a paperclip does - does it matter? It is often bent out of shape, used for something for which it was not originally intended, and then discarded - and nobody seems to notice that it's what holds everything together.
I must confess - I'm not really a paperclip. I don't hold everything together. That's what Jennie does. I was hired to prevent Jennie from having a nervous breakdown.
......Marion
Leeds Carroll
"...The clip is widely accepted and has often been praised for its grace and beauty..." Samuel C. Florman, Technology Review, August/September 1997, page 164.