Why none of the signs of a living thing makes it possible to distinguish it from inanimate mechanisms?

Separately, signs of living things are found in inanimate nature and in human activity, and only living organisms can find a full set of signs.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.