In most countries, houses get more valuable over time, in Japan however, a new buyer will often demolish the home. The life expectancy of a Japanese house in 26 years (the British house lives for example 100 years). Compared to the metabolism from the 60ies which was symbolized by the core, contemporary housing can be seen as a "void metabolism". Constant change is an inherent part of Tokyo's urban system.
It is exactly 50 years since the emergence of metabolism in Japan. Tokyo as an assemblage of independent buildings reflects today more an urbanism of individualism than of the collective.