My grandfather was part of the Limits to Growth/Club of Rome work at MIT in the 70's. I'm trained in the same modeling disciplines and without getting too much into the weeds, there are some deep flaws in the original work (no elasticity of demand or substitution based on resource scarcity, for instance).
Unrelated. I love this guy's work and have no idea how he can do what he does in such a tiny closet of a shop: