It wasn't exactly a technical field. It's amazing how many fields outside of development are very nearly impossible to test in a meaningful way. For example, hiring a sales vp, if done at the same level of problem solving as most tech interviews I've seen, would have to result in a 30% sales increase for the company. You basically have to just see what they say, if they sound like they can tie their own shoes, don't suffer from short term memory loss and have a pulse you usually give them a try and just fire them if they don't work out.
That's why there are so many hangups during the interview process that have nothing to do with a person's actual skill in a given area..like font choice on a resume, or little tips like how to sit in a chair or whatever. Those are all little tells that people look for in an interview, but candidates also know this, so they try to game the system by appearing confident, showing up precisely 15 minutes early with a binder full of extra copies of their resume, just the right amount of hair gel, etc. Because by and large, in fields outside of technical ones, that's how you get a job.
> So, was this guy vetted like this on technical merits, or did he just talk impressively to non-technical people? I'm curious to know how he slipped through.
But yeah, this is actually how he kept slipping through. His interviewers were hiring him for expertise in his field that they themselves did not have. Pretty much it was bureaucrats and administrators hiring somebody for a particular skill requirement. They simply didn't know how to dig more than a level or two deep. In the same way that a person can game the hiring system like I mentioned above, he could do the same for his field. Somebody who was actually in the field would have to spend a little time to figure out that he didn't know the equivalent that computers need electricity to operate. But he could talk for hours about how for example, a browser operates with DNS servers to resolve IP addresses -- and do it with authority (again, as a very rough equivalent).
You could even ask him to produce a plan of action for the next six months and he could produce a pretty good outline, good enough for an interview, but ask him to fill in the details and he couldn't.