<p>Ha! I have to profoundly disagree. </p>
<p>I'll put it to you this way. Before Paul Samuelson had even finished his Ph.D. from Harvard (and began teaching at MIT), economics had already gone through the dark heart of Marxism, which was challenged by the Austrian School and neoclassical economics, and which was then itself challenged by Keynesian economics. Heck, it was in the 1930's, while Samuelson was still in school, when one of the great debates in economics occurred - John Maynard Keynes and the Keynesian school vs. Freidrich von Hayek and the Austrian School, a battle that at the time was clearly won by Keynes, although Hayek's ideas made a powerful comeback in the last 30 years. In fact, Samuelson started his academic career as a major proponent of Keynes, to the point that he developed the concept of the "Keynesian Cross". If Keynes had never been born, Samuelson may never have become an economist at all.</p>
<p>Look, way before Samuelson, the concepts of supply and demand, consumer/producer surplus and deadweight loss, marginal utility, opportunity cost, comparative advantage, micro vs. macro-economics, the notion of labor vs. capital as factors of production (and the discredited labor theory of capital that is at the heart of Marxism), monopolization vs. perfect competition, the multiplier effect , the connection between money supply and inflation, central banking and interest rates, etc. - all of these concepts that we now take for granted as the heart of economics were all developed before Samuelson had appeared on the stage.</p>
<p>In fact, I think Paul Samuelson was once famously challenged by Julian Simon to state one thing that economists have proved that was not intuitively obvious. Samuelson came back with Ricardo's idea of comparative advantage. This just shows that there was clearly a lot of economics happening before Samuelson's time. </p>
<p>Look, I think perhaps the dispute is with the notion of economics as a 'serious science'. Yet the fact is, economics is not a true science, and never will be, for one simple reason - it is nearly impossible to perform controlled experiments in economics with concomitant hypotheses and predictions, the way you can in the true sciences. This is particularly important when you consider such things as the McCloskey critique. While economics has become more rigorous and "science-ish", it's hard for me to see how it could ever be a true science.</p>