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I surveyed 15 students about this optical illusion, asking the following questions:

1. Is the corner with teh dot towards you or away from you?

2. can you see the box fro the other point of view

3. Are you able to interchange the two points of views quickly?

4. Stare it it from one point of view for 10 seconds. Is it harder now to switch between teh two points of view?

5.How hard was it  for you to focus on one point of view on a scale of 1 to 5. 1 :easy, 5: hard

6. how hard was it for you to interchange views on a scale of 1 to 5. 1: easy 5: hard.

80% of the people I surveyed, saw the corner as away from them. Therefore they were seeing the top of the box.  The majority of the people saw the box as under them, therefore seeing the top of the box (dot away from them), becuase they are used to seeing boxes below their eyesight, and therefore having developed a mental image of a box. 87% of them said that they could see the dot coming towards them also, meaning they could see the box from bottom up. Their brain could process it and rotate the box around in there head. Many of them found that after staring at the box from one point of view for a period of time, in this case, ten seconds, it was harder for them to interchange the way they saw the box.I also found that there wasan inverse relationship between how hard it was for them to focus on one point of view and how hard it was for them to interchange the points of views. Many people who had a hard time switching view pointsquickly in the beginning, found it harder to switch the view points after staring at it for 10 seconds.