However also in the field of physics, "the issue of observation" started being discussed more deeply even at the level of substance since quantum mechanics has been developed, and the concept of "the objective observation" has become unstable from this point of view as well.
しかし、物理学の領域においても、量子力学の発展以降は、物質レベルでも、さらに根深い次元で「観測問題」が扱われるようになり、"客観的な観察"というものが、この点からも揺らいでいる。