"He was one of the leading figures to push Anglo-American analytic philosophy into collusion with the sciences...Smart acknowledged that what science tells us about the world is often hard to reconcile with how it seems in experience, but he stuck up for a reality that exists independently of our conceptions of it. He fiercely combated anti-realism, and postmodern notions that scientific theories (and the unobservable entities they depend on) are merely helpful, but arbitrary and disposable, human tools."