And there&#x27;s the added problem of the well-established correlation between body size and longevity. If we scaled down to cat size, it is reasonable to expect we&#x27;d die at 50 instead of 80, even taking our outsize longevity factor into account (<a href="https:&#x2F;&#x2F;musingsofajunglequeen.files.wordpress.com&#x2F;2013&#x2F;12&#x2F;slide11.jpg" rel="nofollow">https:&#x2F;&#x2F;musingsofajunglequeen.files.wordpress.com&#x2F;2013&#x2F;12&#x2F;sl...</a>).