Figure 3- The red-colored flag illusion. To see the red-and-white-colored flag, focus on the white cross on the left for about one minute and then switch over to the black-colored cross on the right.
Figure 7 - Color exists in consciousness only
Figure 8 - The internet dress phenomenon. The original ambiguous picture can be found on a Wikipedia site called 'the dress'. (https://en.wikipedia.org/wiki/The_dress)
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