Problem usually refers to the situation when an individual is facing a goal that is not easy to achieve, that is, there are obstacles on the way to the goal, we call it a problem. An essential feature of a problem is an obstacle. But the objective obstacle is not the problem itself, the problem is put forward by the individual who meets the obstacle, it is always understood and expressed in a certain way.
written to illustrate the nature of the problem solving process?
Depends on a series of cognitive operations