What is the role of trial and error in working with color?

Trial and error is a fundamental method of problem-solving. It is characterized by repeated, varied attempts which are continued until success, or until the practicer stops trying.

Explanation:

Trial-and-error is one of the most useful forms of learning. When we make an error, or fail at something, we give ourselves an opportunity to analyze that failure, make a change, and then try again. ... In many ways, trial-and-error is the only form of learning we really have.

answer; i believe that the correct answers are ///train hospital staff on how to use new machinery and design an artificial lung that could be implanted in humans;