This first puzzle I chose looked simple but was actually very hard. It took me a while to find all 21 squares. For mostly all the squares I used the technique of pattern completion. In a sense this wasn't a pattern but I looked at it as if it was and connected 4 dots to complete a square. I was essentially filling in an incomplete pattern. Another interesting way I came to the correct answer was by the technique of inverse drawing. As I started to draw/find larger squares I realized that these could be duplicated by just drawing the reverse of the one I just found.
The goal in this puzzle was to identify which illustration consists of a single piece of rope that has its ends joined just by using your eyes. One of them consists of 2 separate pieces as you can see while the other is just one single piece. To be completely honest this puzzle took me a while. You would think any person could do it in a second but even after I figured it out I used a pencil to make sure that I was right. Every time I would visually follow the rope my eyes would be somewhere else by the time I got to the center. I did eventually get it. Like the pulley example McKim used, I visually followed the rope for a reasonable amount of time till I came to my conclusion. I even felt some kinesthetic energy and caught myself moving my finger to the lines of the rope in which my eyes were following.
This was the attempt my roommate had at the first puzzle. He obviously could only find 9 of the 21 squares. I don't think puzzle solving is his forte but after I showed him mine he thought that you couldn't form a square of a different size then those he did in the image above. He informed me that he simply just took his pencil and essentially just connected the dots similar to pattern completion.
My roommate actually wrote his explanation on the paper. He attempted to do it visually but failed to solve it and then took the easy way out by just tracing the rope with his pencil.
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