Ask what minimalism is (in a Tech Comm context), and you are likely to get a recitation of the four principles of minimalism.
Per JoAnn Hackos, the four basic principles of minimalism are
♦ Principle 1: Choose an action-oriented approach
♦ Principle 2: Anchor the tool in the task domain
♦ Principle 3: Support error recognition and recovery
♦ Principle 4: Support reading to do, study, and locate
This is the explanation from the inside. It is equivalent to answering the question, what is a can of peaches, by saying it is a can containing syrup and sliced peaches. What such a definition lacks is the explanation of why you would put something as wonderful as a fresh peach into a can. It is the what but not the why.