This is doing the rounds at the minute, and is very well done….



Can you figure it out?


    1. You are right Eddie! Stretching is not the right word, “expanding” or “growing” would be better. Watch the moment when I replace the expanded pieces with the real ones, you’ll see how they were expanded along the diagonal.

    2. What I did was creating an exact border around the pieces in the first animation-frame where they separate. From then on I had those borders move along without changing them again. The strip results from the difference in height after replacing the manipulated pieces (extended downwards) with the original pieces. If that is precisely the area of one brick I haven’t checked but assume that is the case.

    3. Very nice, Benjamin. Your animation also exposes how the pieces are stretched *gradually* as they move (instead of all at once just before the re-attach, as I had thought).

    1. much, much better than the .gif, which is a cheat. although the odd sizes of the rectangles are hard to miss.

  1. Are we supposed to be impressed by this? It’s a cheat. An illusion should play on you perceptions, not change the figures while moving them about. Color me disappointed.

  2. wow, this is a solution for World Hunger and could also help NASA and astronauts on long voyages to Mars (pun intended). i think there are two problems to solve first

    1. will this work with foods that are more nutritionally balance and wholesome that chocolate?

    2. is the energy needed to cut and shuffle less than that to create a square of the food by more traditional means.

    at last the 21st century is beginning to make sense!

  3. This is making me feel very stupid! I can see how the stretching creates a strip equivalent in volume to one of the pieces of chocolate, but I don’t understand how it turns into a rectangle. It’s probably obvious, but I don’t get it.

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