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...and the few cases that may exist are still disputed. Though the question of what qualifies as "similar" physical laws may seem to leave the definition ...in]] word meaning "everything" and the latter, of course, a shortened form of "cosmos". ...

...this gravitational direction usually, though not necessarily, matches that of the mound; "down" on the shee is the same direction as "down" on the world ...are often, but not always, flat on the top (assuming there is a top, which of course may not be the case in a [[plane]] without [[gravity]].) They may b ...