IF THEY LOWER THEIR STANDARDS SO MUCH THEN HOW COME ah whatever who cares screw alll of youhttps://twitter.com/_AlvinChristian/status/1220007213604970501 …
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It was the grammatical error in the second last sentence that made me realise 
This is generally a normal thing in even studies. You have a thing happening at some time t; you denote it 0, everything before is negative, everything after is positive.
Cool! I’ve seen t=0 before, but the numbers are a day or an hour or something but measuring “women’s standards” with t and unquantified numbers? And the other axis is standard deviation from 0 ... I presume you wouldn’t normally measure sociological enquiries this way :)
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