Much of my time lately has been spent trying to make an origami tarantula. This picture shows a mere fraction of my failed attempts to achieve the "closed sink" fold. It is number 32 out of the70 steps it takes to create the bug. I have certainly mastered the folds that come before the closed sink, having done them over a hundred times, but although I can fumble my way through it, I have only the flimsiest understanding of how this particular fold is accomplished. By the time I have completed it, the paper is is so badly molested and reworked that it barely holds together.
Why do I spend hours every day in pursuit of the elusive sink? My only answer is, why not?