All of which would be perfectly reasonable if humans were completely rational actors.  But we all know we&#x27;re not.  We&#x27;re semi-rational at best.  Yes we try to maximize utility, but we&#x27;re not Commander Data, calculating equations in our heads down the the 999999 points of precision, and coldly make decisions based on purely financial measures.<p>This is even more true for some things than others... few people are going to say &quot;Hey, deflation is on, let me wait until next week to eat&quot; when they&#x27;re hungry today.<p>I&#x27;m not saying deflation is good or anything, but an awful lot of economic theory is rooted in some pretty shaky foundations.