The other three views of the future can work. Definite optimism works when you build the future you envision. Definite pessimism works by building what can be copied without expecting anything new. Indefinite pessimism works because it’s self-fulfilling: if you’re a slacker with low expectations, they’ll probably be met. But indefinite optimism seems inherently unsustainable: how can the future get better if no one plans for it?
