One seed piece and eight tile pieces form a pseudo-random pattern.
This is a physical implementation of the Rule 30 Elementary Cellular Automaton discovered by Stephen Wolfram and used in Mathematica as a pseudo-random number generator.
This puzzle demonstrates the random and arbitrary nature of mathematics.
- 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:
Source code and more information about these tiles on my blog:
Updated 11 June 2014: Slight refinement to shape stops entire row from being flipped.