Amdahl's law is more simplistic than that. You're suggesting that the benefit of adding an additional worker is negative. Amdahl's law is not representative of

Amdahl's law is more simplistic than that. You're suggesting that the benefit of adding an additional worker is negative. Amdahl's law is not representative of most systems; your generalization seems better. The marginal benefit as a function of resources depends on the system in question. It isn't just a flat positive percentage.