Out of the Cave

Bo discovered fire three caves back. He invented the stick, the toothbrush, knife, and fire ring. He just wants to be left alone to finish the comb, but beautiful unattached Dawn wants to move the village of two-dozen cave-dwellers out of the cave. "No cave is large enough." But, no one lives outside a cave where the rain can get at you; and everyone knows rain melts people-- they've seen it. Bo improves the cave by inventing the wall, which Rock (Bo's nemesis and competition for...
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Bo discovered fire three caves back. He invented the stick, the toothbrush, knife, and fire ring. He just wants to be left alone to finish the comb, but beautiful unattached Dawn wants to move the village of two-dozen cave-dwellers out of the cave. "No cave is large enough." But, no one lives outside a cave where the rain can get at you; and everyone knows rain melts people-- they've seen it. Bo improves the cave by inventing the wall, which Rock (Bo's nemesis and competition for Dawn's attention) sets on fire. Bo comes up with a plan to build a lodge, motivating the villagers, but in the end it's going to leak, and he 'd better come up with the solution soon-- Dawn is not pleased, and Rock is laughing at him. Bo trips across the answer and proves he is the original scientist and inventor.