So, what is the significance of all of this information?
1.) It allows one to use a simple palette such as three primaries to make good paintings. This reduces the decision making process and helps with speed. A virtue en plein air. But it requires mixing - a great place to start a painting career.
2.) It helps one understand how mixing works, colours and values.
3.) It helps one design a palette for making high key colour paintings - not much gray here. A requirement for non tonal painting.
4.) It helps one to "see" from the study of life subjects.
5.) It helps one in the pursuit of abstract painting - still need to know how colour works and how to get an effect.