Examples of catamorphoses are: reduction of the nervous system, sensory organs, movement and digestion in parasitic worms; the loss of leaves and roots by parasitic plants, etc. Simplification of organization in parasitic forms is accompanied by an improvement in the reproductive system, which leads to their prosperity, that is, to biological progress.
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.