The thing I try to keep in mind is that nobody can make perfect decisions. We all have heuristics that work pretty well for us generally, and sufficiently clever&#x2F;prepared people can abuse that.<p>For example, think back to Google Glass. There was a time when it was an amazing revolution about to happen. There are pictures of generally smart, experienced people wearing Google Glass and trying hard to look like the future. [1] How much got spent there? On the glasses alone, figure it was something like 100,000 units at $1500 each for a total of $150m. Google presumably spent a fair bit more on R&amp;D and marketing, and plenty of other companies spent time and money on the platform.<p>Were all those people dumb? I never understood the appeal of Google Glass, so you&#x27;d think I&#x27;d be inclined to say so. But my take is that the people who gave that a go were just working with different heuristics than I am. Lord knows I&#x27;ve bought plenty of disappointing gadgets over the years. As long as we&#x27;re write more often than we&#x27;re wrong, the heuristics aren&#x27;t bad, just not perfect.<p>So here I figure that most of the people who put in money weren&#x27;t idiots; they just had different ways of judging. E.g., a lot of deals happen partly because of trust. But we all know that con men are people who are extremely good at manipulating trust-related heuristics.<p>[1] <a href="http:&#x2F;&#x2F;www.forbes.com&#x2F;sites&#x2F;tomiogeron&#x2F;2013&#x2F;04&#x2F;10&#x2F;google-launches-glass-collective-with-andreessen-horowitz-kleiner-perkins-to-fund-google-glass-startups&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.forbes.com&#x2F;sites&#x2F;tomiogeron&#x2F;2013&#x2F;04&#x2F;10&#x2F;google-lau...</a>