(Thank you, Alston-King, for your generous reward! Although the writing is slow, there must be an attitude.)
The observation report room of the marketing department is actually a brightly lit meeting room.
This meeting room is different from other meeting rooms because the observation report room's decor was quite expensive.
It is separated by only one wall from the 1:1 scale "bookstore" experimental site built by the marketing department in the building.
The main wall of the report room is covered by a double-sided mirror, two meters high and five meters wide, facing the reading sofa in the corner lounge area of the "bookstore".
From the volunteers' side in the next-door bookstore, they can only see a reflective mirror, while the people in the observation room can clearly see the various activities and expressions of the volunteers.
In fact,
Once all test tasks are completed, the various questionnaires filled out by the reading volunteers can also have a similar effect.
