The On-Line Encyclopedia of Bongard Problems

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Arrows pointing in different directions vs. arrows pointing in the same direction.

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	REFERENCE	`M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 231.`
	CROSSREFS	`Adjacent-numbered pages: BP47 BP48 BP49 BP50 BP51 * BP53 BP54 BP55 BP56 BP57`
	KEYWORD	`finished, traditional, bongard`
	CONCEPT	`arrow (info \| search),` `tracing_lines_or_curves_meet (info \| search),` `pointing_to (info \| search),` `tracing_line_or_curve (info \| search),` `imagined_point (info \| search),` `imagined_entity (info \| search)`
	AUTHOR	`Mikhail M. Bongard`

Internal arrows point outward vs. internal arrows point inward.

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	CROSSREFS	`Adjacent-numbered pages: BP97 BP98 BP99 BP100 BP101 * BP103 BP104 BP105 BP106 BP107`
	KEYWORD	`traditional`
	CONCEPT	`arrow (info \| search),` `between (info \| search),` `tracing_lines_or_curves_meet (info \| search),` `tracing_line_or_curve (info \| search),` `imagined_point (info \| search),` `imagined_entity (info \| search)`
	AUTHOR	`Douglas R. Hofstadter`

The circles will collide if the arrows are their velocities vs. the circles will not collide if the arrows are their velocities.

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	CROSSREFS	`Adjacent-numbered pages: BP353 BP354 BP355 BP356 BP357 * BP359 BP360 BP361 BP362 BP363`
	KEYWORD	`nice, physics, unorderedpair, traditional`
	CONCEPT	`arrow (info \| search),` `tracing_lines_or_curves_meet (info \| search),` `speed (info \| search),` `imagined_line_or_curve (info \| search),` `imagined_entity (info \| search),` `imagined_motion (info \| search),` `motion (info \| search),` `collision (info \| search)`
	AUTHOR	`Aaron David Fairbanks`

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