There’s a lot more different than efficiency. We can program computers with algorithms capable of computing any possible addition, the limitation being only the

There’s a lot more different than efficiency. We can program computers with algorithms capable of computing any possible addition, the limitation being only the memory of the computer and time, not the algorithm itself. Those algorithms are genuinely doing addition in a way that a pre-computed lookup table is not. It’s the difference between computing an addition in your head and just remembering that 2 + 2 is 4.