your eye sight is not correct and you normally see everything upside down. Your brain corrects everything and makes it the right way round again. Beleive this or else everything will go wrong in your life! You will be cursed!
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Hind-sight refers to how a situation could have been handled
after it's over. When you have lived/been through an event,
hind-sight, often, points-out other ways it could have been
resolved.