True Believers -- and others -- rub elbows in Pocatello POCATELLO--A hulking 6-foot 3-inch believer cornered John Mionczynski as he left the lectern. "I know you're a skeptic, right? But look here." The man jabbed a photo with his thick finger. "See. See. That's Bigfoot." I peeked over the man's meaty shoulder to see a grainy black and white of trees and shadows. I felt like I was flunking an ink blot test. He prodded Mionczynski. "Obviously you see that's Bigfoot there. What do you think of that?" The man then presented a shot of an oval smudge on a...