&quot;I can talk to you about my headache and believe that I am communicating effectively with you, because you’ve had your own headaches. The same thing is true as apples and the moon and the sun and the universe. Just like you have your own headache, you have your own moon. But I assume it’s relevantly similar to mine. That’s an assumption that could be false, but that’s the source of my communication, and that’s the best we can do in terms of public physical objects and objective science.&quot;<p>So, in other words, he drew the same conclusion that Wittgenstein did over half a century ago (approaching it from the vantage point of language), but dressed up in more up-to-date accoutrements in analytic philosophy?