While not the main point of the article, the introductory premise is a bit off IMO. When you choose simulation, you trade artistic control for painful negotiati

While not the main point of the article, the introductory premise is a bit off IMO. When you choose simulation, you trade artistic control for painful negotiation via an (often overwhelming) amount of controls. For a key scene like the balrog, you will probably never decide for simulation and go for full control on every frame instead. To stay in the tolkien fantasy example, a landscape scene with a nice river, doing a lot of bends, some rocks inside, the occasional happy fish jumping out of water - that would suit a simulation much better.