I think the rock concert analogy may go over the heads of some readers here, so it would also be like how they select the contestants for the price is right show. just pick the most energetic people in line or the ones wearing “I love drew” or “it’s my birthday” t-shirts etc, :^)
good; another is how traveling church was depicted in “Leap of Faith” and other things has people scouring the lines outside etc. trying to find somebody with an affliction that can be healed or whatever (I’m noting this as a Christian BTW) - but, bottom line, this is a pretty cool “proof” IMO :)