Refers to the pattern of continuity and change in human capabilities that occurs throughout the course of life.

For, any living being there is a natural pathway set for it to develop itself and resemble its parents or any related organisms in different terms like structural and  emotional factors. As, the organism is meant to pass through a series of processes to reach the expected stage of maturation inside the given time.

Explanation:

As there is a pattern of continuity and change in human capabilities that occurs throughout the course of life, as they include the over all development of living beings inside the environment and provides more chances for the living being to have a more matured form of body system. As, some of the factors or we can say stages through which the organism goes through are as follows:Physical development- As, we can assume that the structure of the living being has a greater significance in making it a more developed or complex form of life, so, the physical development is the most important part of any organisms life.Cognitive development- The overall development of the living being brain and its nervous system results in a more strong emotional part of the living being system, as there are different factors like I.Q level, reasoning, and reaction to certain stimulus which are greatly effected by the cognitive development of the living being.

Yes he thought they should be left to chance why, because he thought that was the best thing to do