The author doesn&#x27;t really address one of the most important mechanisms that human ears use to determine direction: the delay between a sound wave reaching the &quot;near&quot; and &quot;far&quot; ear.<p>You can try this with headphones, by playing an identical recording in both ears, but delaying one by about 1 millisecond (I set this up back in college on my BeBox).<p>You&#x27;ll perceive the sound as coming entirely from the non-delayed ear, at least until you take that side of the headphones off, at which point you can once again perceive that it&#x27;s also playing in the delayed ear.