If someone tells you now that you are not taking the exam in the classroom, but taking the exam yourself in your dream, what can you demonstrate (with philosophy)?

Answer: 1. Consciousness (dream) is a part of the individual (person), so the part in the dream is a part of the person. People are the whole, dreams are part of people, and people in dreams are part of dreams.

According to the dialectical relationship between the whole and the part, the whole is higher than the part, which has the characteristics that the part does not have, so the part cannot represent the whole, that is, the person (part) in the dream cannot be equal to or higher than the dream (whole).

To sum up, the "dreamer" can not correctly define the dream in philosophy, nor can it correctly define the state of people.

2. Consciousness is "self-knowledge", not "knowing people".

Consciousness represents our independence as individuals. Is the only coordinate of subjective existence. Consciousness is an individual's cognition of nature, which is inherent and will not change with the interference of other individuals.