BA does almost nothing right. So why is the stock up 52%? We have all heard the old saw as to how “the market climbs a wall of worry.” There is, of course, an inherent truth in this. Investors always take on a bit of risk in exchange for their gains. One might imagine that this is a well-reasoned and well-researched risk. Yeah, well, you’d probably be wrong about that. For most of the past eight months, most investors haven’t even shown the common rules of life we try to teach grade school kids, like “look both ways before you cross the street,” or “don’t trust that weird guy in the rusty old Buick ...