At the Amherst Railroad Hobby Show at the Big E, I’ve decided there are three types of grown men who concern me the most: those who will spend $1,200 on a windmill for their own model railroad empires; pedophiles ogling at my children from behind train display tables; and those who spend hours of footage videotaping trains going around their tracks. Nothing like a day of wonder, nostalgia and the heebie-jeebies.