About Limitations vs. Diversity
Every one of the possible configurations of a body may become a nuisance when it becomes dominant and allows very few variations and other adaptive configurations. It is especially interesting to deal with, when it is not caused by limitations in the structure but by limitations in the movement strategy or somewhere else…
Being straight is the same. Being straight is one of the possible configurations of a well organized body. It is fine, as long as it is one of many. It becomes a problem when it becomes dominant and allows very few variations and other adaptive configurations.
A scoliotic pattern may as well be one of the possible configurations of a well organized body. It is fine, as long as it is one of many. It becomes scoliosis when it becomes dominant and allows very few variations and other adaptive configurations.