We should note that all of these places of thermal extremes (Finnish saunas, Japanese hot baths, American beaches and mountains) have their opposites close at hand. There are possibly two reasons for having the extremes right next to each other.
The first is physiological: the availability of extremes ensures that we can move from one to the other to maintain a thermal balance.
The second might be termed aesthetic: the experience of each extreme is made more acute by contrast to the other.
Works of art which have great life often have intense contrast within: rough/smooth, solid/void, loud/silent, empty/full. It is the difference between opposites which gives birth to something. Contrast is what often gives other principles their degree of life – the intensity of the boundary, the markedness of the alternating repetition.
Contrast strengthens centers by making each a deeper entity of itself, and thereby giving deeper meaning to both. It is, at its simplest, what allows us to differentiate. But meaningless contrast remains meaningless. It is only when centers are actively, mutually, and meaningfully composed that it acts to deepen the whole.
The central goal of Slow Productivity is to keep an individual worker’s volume at a sustainable level. A natural fear is that by reducing the amount of work each employee tackles at any given time, it might reduce the total amount of work an organization is able to complete, making it less competitive. This fear is unfounded. As argued, when an individual’s work volume increases, so does the accompanying overhead and stress, reducing both the time remaining to actually execute the tasks and the quality of the results. If you instead enable the individual to work more sequentially, focussing on a small number of things at a time, waiting until she is done before bringing on new obligations, the rate at which she completes tasks might actually increase.