Can you tell the difference between shit and Shinola? But seriously... Ask them to write a modest Javascript program, but not one that is commonly done - so n

Can you tell the difference between shit and Shinola? But seriously... Ask them to write a modest Javascript program, but not one that is commonly done - so not like rollover links or drop-down menus. Don't make them do it on a whiteboard. Give them a computer and let them do it at their own pace. Put all the usual tools on it - Firebug and so on. However, observe them while they are developing the program. Do they actually _use_ any of those tools? If not, either they are 1337, or they don't actually know that those tools even exist. I am completely convinced that most JS coders don't even know there is such a thing as the Javascript console.