Studying in school and university is similar to figure skating or art gymnastics. The knowledge of the elements, the purity of their performance, beauty and artisticism are assessed, and the final useful result is not assumed.
But work (in a normal office and not where fatigue is considered a measure of labor) is more like football or hockey. You can fit as beautifully and technically as much as you want and circumvent rivals. And you can score a ugly and untechnical goal.

Therefore, many graduates, coming to work, wonder why this boss is angry. They know so much, so tried, after work stayed, all the soul invested. Red graduates and nurses. So the boss is not evil, he just needs a goal, not a tapping tape.