I know it&#x27;s basics but we <i>really</i> have to get rid of the bowling ball on rubber sheet or the fat man on trampoline analogies to teach GR to laypersons (<a href="http:&#x2F;&#x2F;physics.stackexchange.com&#x2F;questions&#x2F;3324&#x2F;misused-physics-analogies&#x2F;13839#13839" rel="nofollow">http:&#x2F;&#x2F;physics.stackexchange.com&#x2F;questions&#x2F;3324&#x2F;misused-phys...</a>). A good analogy will teach a few most important principles of a complicated concept to a  beginner, this one doesn&#x27;t come close. In fact, it&#x27;s very dangerous because it gives the <i>illusion</i> of understanding by substituting the wrong concept with the right one. This can lead to confusions like this one: <a href="http:&#x2F;&#x2F;physics.stackexchange.com&#x2F;questions&#x2F;142344&#x2F;is-my-interpretation-of-how-a-gravitational-wave-is-formed-correct&#x2F;142357#142357" rel="nofollow">http:&#x2F;&#x2F;physics.stackexchange.com&#x2F;questions&#x2F;142344&#x2F;is-my-inte...</a>