Answer:
a planning fallacy.
Explanation:
The fallacy of planning is a concept we all know. It is related to such a common phenomenon that planning does not coincide with the facts. This, particularly in terms of time. In Dan's case, subjects for the economics test seemed so common to him that he planned to study the day before the test. However, Dan realized that his planning did not match reality. The subject of the test was not so common and he should have studied in advance.
This inconsistency between planning and execution has many consequences in terms of time, of course. However, it also has implications in terms of resources, productivity and efficiency. Even the fallacy of planning can have very serious effects on the emotional plane.
