I&#x27;m sorry, but I don&#x27;t want to debate your personal definition of the word &quot;science&quot;. Per convention economics is called a &quot;social science&quot; and that&#x27;s a convention I will adhere to.<p>In addition to what JupiterMoon says, I&#x27;d say that individual behaviour was never a real problem in economics. A lot of the theories are built on stupid assumptions about rational behaviour, but that&#x27;s just it: you always can change the assumptions and see what happens. Behavioural economics is just that.<p>The real problem of economics is scale and inability to cleanly experiment on that scale. To imply any kind of large scale &quot;herd&quot; behaviour from individual behaviour would still require a tonne of a priori, non-falsifiable assumptions. Even if the assumptions can be shown to be valid now, it would be impossible to prove that they are stable and valid for a long period of time.