Back in January Winder posted...
"I don't want to give too much away but you do not have to give a wingman's name - you can make it up. WM"
I know squat about how it works, but will take a wild guess from the above that you can probably type anything you want into the witness box (e.g. 'villagers', 'ground troops', 'my wingman', 'Easter Bunny', etc) with equal effect. I really have no idea...just my take on it.
There also seems to be no consensus regarding the 'magic words' for claims success...some people say long detailed claims work best, others have success with two word descriptions. The only pattern seems to be that there is no pattern. Leads one to suppose that it is largely a 'roll-of-the-dice type of algorithm, rather than a complex logical algorithm parsing your test for key phrases. Again, just my wild speculation.
Only the team knows for sure, and they are keeping this under wraps. Sometimes when you know how a thing works it loses it 'magic', so I can see why they haven't told all.