This piece is part of an art exhibition. it is created with spools of various colored threads. only from a distance does the piece reveal the image of Mr. Spock. There is a little glass ball mounted on a black stick in front of the image. if one looks through it, the image rotates 180 degrees. Most likely a computer can generate the pattern for the spools, and most likely it's 'just' an optical illusions. in other words, one could be very critical of 'the quality' of this art, but it makes me smile and for a while all there was was the art piece and the viewer, in this case, me.