Under normal circumstances, college students usually grab seats for self-study at night. Why grab a seat? In fact, the university has an idea, not that it can't arrange fixed seats, not that it can't arrange fixed classrooms, nor that it doesn't have the funds to build fixed classrooms, but that it does it consciously. To give the simplest example, an enterprise has three employees of 30 people, each of whom has a car. How can we better get employees to the company early? The boss first investigates the employee's address to see if he can get a ride. If not, 29 parking spaces are free, and 1 parking space is paid! If there is one on the road, you will lose a free parking space. In this way, employees should arrive as early as possible in order to have free parking spaces. Similarly, the same is true of universities.
So don't underestimate whether this seat is fixed. It is precisely because of uncertainty that students need to compete with each other. After grabbing the seat, you can have a place to study, and you can feel that you earned it, so that you will cherish this place to study. In fact, this is also a small strategy for universities to promote students' learning. Do you think university leaders are wise? It can not only reduce the construction resources, avoid waste, but also give students the motivation to compete for seats. It is really killing two birds with one stone.
There is a long-standing tradition that there are no fixed seats in universities, so we should respect this tradition. In order to have a place to study, grab a seat after class! There is no fixed seat, forget it!