One seed piece and eight tile pieces form a pseudo-random pattern.
This is a physical implementation of the Rule 30 Elementary Cellular Automaton d...iscovered by Stephen Wolfram and used in Mathematica as a pseudo-random number generator.
This puzzle demonstrates the random and arbitrary nature of mathematics.
3d model print parameters
Print - one copy of big-bang-v2.stl - as many copies as you want of rule-30-cells-v2.stl Starting with the "big bang" piece, complete a row at a time ...so that all inward pointing arrows are filled and the only free outward pointing arrows point downward into the next row. Keep printing copies of rule-30-cells.stl and extending the puzzle. This is your life now. ---- More on Rule 30: http://mathworld.wolfram.com/Rule30.html Source code and more information about these tiles on my blog: http://www.logarithmic.net/pfh/blog/01400409242 --- **Updated 11 June 2014:** Slight refinement to shape stops entire row from being flipped.