Anything done on paper/email could be the work of someone else. The first thing we then do in interview is give the person a disk-less, internet-less machine a

Anything done on paper/email could be the work of someone else. The first thing we then do in interview is give the person a disk-less, internet-less machine and get them to write FizzBuzz. As they do it we get them to talk about their usual dev environment. Once they've done that we move on to discussing the code they sent. All these things are purely to weed out the complete time-wasters. From the remainder, we then try to find someone who can design, code, document and collaborate.