The charcoal on the cave wall, then. I recommend all serious inventors here watch the "Killing Good Ideas Can Harm Your Future" video about fire and the wheel.
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The charcoal on the cave wall, then. I recommend all serious inventors here watch the "Killing Good Ideas Can Harm Your Future" video about fire and the wheel.
I was thinking about the charcoal on the cave walls too! I will watch it, thank you!