The ancient Greek philosopher Rutak famously said, "The mind is not a container to be filled, but a torch to be lit."

The example of Archimedes' law of specific gravity for bathtub is also a container problem.

The container experiment in psychology can be understood after several times.

Life itself is a blank container. How did you put it in? You can put pain into the container of life, then you will have pain, you can put happiness into the container of life, and then you will get happiness.

Due to the limitation of container (human body) and objective conditions, people's thoughts will encounter temporarily insurmountable setbacks and obstacles in the process of expansion, and even go astray. This is the inevitable price of development, and we can take it lightly instead of being paranoid about it. Paranoia means pain! Moreover, the experience and lessons of individual expansion will become a part of the accumulation of human thinking and contribute to the further development of human overall thinking.