"The more I play and create games, the less convinced I am that the difficulty of games should be thought of in terms of a linear or exponential ramp upwards where, as the player gets stronger, you need to make the opposition increase proportionally in strength. [...] While some form of escalation certainly feels good in a challenging game, [there's] something futile and perhaps nihilistic about endlessly cranking a single knob that goes from easy to hard. Rather, I believe it makes more sense to think about difficulty in terms of the game's overall pacing. Difficulty should ebb and flow, and make room for other aspects of play."