Anyone who has played Factorio knows that "just in time" is far superior to actually holding reserves. If you buffer things up, you don't know where the problems in your production are.
People are saying "why didn't we buffer up more" ? Well, there we go. Play Factorio. You'll see just how bad buffers are in a simulated factory.
People are saying "why didn't we buffer up more" ? Well, there we go. Play Factorio. You'll see just how bad buffers are in a simulated factory.