&gt; I don&#x27;t think it&#x27;s fair to lump those two together.<p>Heh, I disagree. I hold almost the exact opposite view and believe it is <i>perfectly</i> fair to lump those two together. Cold fusion requires overcoming the Coulomb barrier at room temperature. Do you have any idea how impossible that is? It&#x27;s just as impossible as accelerating an object faster than light, or me spontaneously quantum tunneling through my floor into my basement. So yes, perpetual motion machines, unicorns and cold fusion all belong to the same area of science and deserved to be lumped together.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Coulomb_barrier" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Coulomb_barrier</a>