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=== Information or black hole paradox === | === Information or black hole paradox === | ||
* from physicist Steven Hawking | * from physicist Steven Hawking | ||
* a black hole does not absorb every particle, so over time it will disappear into nothing | * a black hole does not absorb every particle, so over time it will disappear into nothing | ||
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== Riddles == | == Riddles == | ||
* while not paradoxes (because they can be solved), riddles present interesting intellectual scenarios for students | * while not paradoxes (because they can be solved), riddles present interesting intellectual scenarios for students | ||
=== The truth-teller & the liar riddle === | === The truth-teller & the liar riddle === | ||
* two monsters guard a fork in the road | * two monsters guard a fork in the road | ||
** one path leads to perdition, the other to salvation | ** one path leads to perdition, the other to salvation | ||
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* '''cats always land on their feet''' | * '''cats always land on their feet''' | ||
** may be supported by the "cat righting reflex" which is the ability of cats to right-themselves mid-air, thus landing on their feet | ** may be supported by the "cat righting reflex" which is the ability of cats to right-themselves mid-air, thus landing on their feet | ||
<br>and<br> | |||
* '''buttered toast always lands with the butter-side down''' | * '''buttered toast always lands with the butter-side down''' | ||
** an experiment showed that buttered toast will land butter-side down 81% of the time (see [[wikipedia:Buttered_cat_paradox|Buttered cat paradox - Wikipedia]] | ** an experiment showed that buttered toast will land butter-side down 81% of the time (see [[wikipedia:Buttered_cat_paradox|Buttered cat paradox - Wikipedia]] | ||
=== Intentionally blank page === | === Intentionally blank page === | ||
* when a published or printed document states, "intentionally blank page" in order to indicate that the blank page in the document is there on purpose | * when a published or printed document states, "intentionally blank page" in order to indicate that the blank page in the document is there on purpose | ||
** then the page is no longer blank | ** then the page is no longer blank |