Submitted by dumdumdaadum t3_yd39rf in explainlikeimfive
TurkeyDinner547 t1_itpsqgh wrote
Reply to comment by dumdumdaadum in eli5 this excerpt from Theory of everything by Stephen Hawking by dumdumdaadum
Hold a basketball over your head and notice how you can't see things on top or directly above it if your looking up from the bottom.
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