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A-ca-oo-mah-ca-ye - A-ca-oo-mah-ca-ye, also known as Feathers or Old Swan (d. 1859 or 1860) was a chief of the Blackfoot First Nation with a reputation as a peacemaker.
Whitewater kayaking - Whitewater kayaking is the sport of paddling a kayak on a moving body of water, typically a river. Whitewater kayaking can range from a fun, carefree, splishy-splash float trip to a challenging, adrenaline filled sport.
Puffer train (CA) - In a cellular automaton a puffer train, or simply puffer, is a finite pattern that moves itself across the "universe", leaving debris behind. Thus a pattern consisting of only a puffer will grow arbitrarily large over time.
Spaceship (CA) - In a cellular automaton, a finite pattern is called a spaceship if it reappears after a certain number of generations in the same orientation but in a different position. The smallest such number of generations is called the period of the spaceship.
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