I am a physicist...<p>The most interesting (to me, at any rate) bit of this article are susskind&#x27;s observations on computational complexity. As a precocious undergrad I put forward the idea that gravity and time dilation were the same thing, and both stemmed from the universe needing a constant amount of &quot;time&quot; to compute the interrelations between the particles in a volume of space - and if there were more particles more time would be needed as the graph of particle interactions would grow non-linearly - and therefore time &quot;slows down&quot; in a matter (information) dense area of spacetime.<p>What really got me gunned down was then going on to argue that this suggested a simulated universe, running in a substrate.<p>Either way, interesting to see someone else who actually has some clout having similar ideas.