Memes

That point does not take away from the metaphor. The fact that matter is not created or destroyed, only transformed means there is always an exact amount of finite matter and energy in the universe. Just as that matter can be in unlimited formations the legos can also be arranged in limitless different ways. Capitalism is doomed because it needs to keep deriving increased profits from the exploitation of earth and people while the profit margin has the tendancy to fall and there are very limited new markets with a world nearly all capitalist. The last resort in bringing back up profit margins to to destroy things in war so that they can start from the beginning with high rates of profit. This could be analogous to breaking apart legos and building something new.