I figured you'd try and turn the meaning of what you said. A sad attempt to try and salvage your poor explanation of a cookie. Let me put what you've said into a different context:
Computers are for being able to order your shopping on the internet.
It doesn't really explain exactly what they do, does it? I'm not going to argue the point further - I know your ego will go to some pretty hilarious lengths to "win" an internet discussion. I just thought I'd correct you before you miseducate people.