Capital doesn't do work.
Yes it does. If you invest your capital it works for you and brings in interst. My teachers in high school used to always be saying things like, 'I could work a lot harder, but I prefer to invest some of my money and let my MONEY work for me.'
THAT is what has gone over your head like a 747!
Can you give me an example of money doing work?
It's not the money itself that does the work. It's the owner of the money. Investors decide how they're money should be used. They can piss it away on something useless (and likely lose their investment), or put it into something a lot of other people find valuable, in which case they'll likely make a profit.