Humans are creatures with limited attentional capacity.  We don’t have the time or brainpower to personally investigate every claim that comes our way.  We don’t like questioning ideas to which we’ve become accustomed.  Evil-minded people only need to get those lies into our heads.  Once in there, those false ideas rattle around for a long time. How to best get false information into people’s heads?  Employ a Trojan horse maneuver, i.e., plant credible-seeming information into our brains when we are young using credible intermediaries (such as our parents) through the use of the mass media.  And it always helps if the proponents of deceit are well-financed while the proponents of the truth are not. Once false information is safely in their heads, humans are willing to carry it around for decades, disseminating it to yet others and even fighting for it. No, I’m not writing about Iraq. Today’s case study is cow milk. Yeah, the kind of milk you probably drink.  Why drink milk?  You’ve probably seen lots of those slick ad campaigns.  You’ll hear lots of claims that it is important for humans to drink cow milk. Before I go further, here are my disclaimers.  For my first 4 ½ decades on this planet, I poured milk on my cereal.  About five years ago, my wife and I began to suspect that our youngest daughter was lactose intolerant.  People who are lactose intolerant can’t properly digest milk. We thus switched over to soy milk for her.  I also switched …