{"id":7169,"date":"2016-02-12T09:52:44","date_gmt":"2016-02-12T16:52:44","guid":{"rendered":"http:\/\/josemarquez.com\/xsml\/?p=7169"},"modified":"2016-02-12T09:52:44","modified_gmt":"2016-02-12T16:52:44","slug":"certainty-is-a-contact-sport","status":"publish","type":"post","link":"https:\/\/www.josemarquez.com\/etc\/2016\/02\/12\/certainty-is-a-contact-sport\/","title":{"rendered":"Certainty is a contact sport"},"content":{"rendered":"<p><a href=\"http:\/\/www.newyorker.com\/tech\/elements\/gravitational-waves-exist-heres-how-scientists-finally-found-them?mbid=social_twitter\">Nicola Twilley<\/a>:<\/p>\n<blockquote><p>The LIGO team includes a small group of people whose job is to create blind injections\u2014bogus evidence of a gravitational wave\u2014as a way of keeping the scientists on their toes. Although everyone knew who the four people in that group were, \u201cwe didn\u2019t know what, when, or whether,\u201d Gabriela Gonz\u00e1lez, the collaboration\u2019s spokeswoman, said. During Initial LIGO\u2019s final run, in 2010, the detectors picked up what appeared to be a strong signal. The scientists analyzed it intensively for six months, concluding that it was a gravitational wave from somewhere in the constellation of Canis Major. Just before they submitted their results for publication, however, they learned that the signal was a fake.<\/p>\n<p>This time through, the blind-injection group swore that they had nothing to do with the signal. Marco Drago thought that their denials might also be part of the test, but Reitze, himself a member of the quartet, had a different concern. \u201cMy worry was\u2014and you can file this under the fact that we are just paranoid cautious about making a false claim\u2014could somebody have done this maliciously?\u201d he said. \u201cCould somebody have somehow faked a signal in our detector that we didn\u2019t know about?\u201d Reitze, Weiss, Gonz\u00e1lez, and a handful of others considered who, if anyone, was familiar enough with both the apparatus and the algorithms to have spoofed the system and covered his or her tracks. There were only four candidates, and none of them had a plausible motive. \u201cWe grilled those guys,\u201d Weiss said. \u201cAnd no, they didn\u2019t do it.\u201d Ultimately, he said, \u201cWe accepted that the most economical explanation was that it really is a black-hole pair.\u201d<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Nicola Twilley: The LIGO team includes a small group of people whose job is to create blind injections\u2014bogus evidence of a gravitational wave\u2014as a way of keeping the scientists on their toes. Although everyone knew who the four people in that group were, \u201cwe didn\u2019t know what, when, or whether,\u201d Gabriela Gonz\u00e1lez, the collaboration\u2019s spokeswoman,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[5,13,16],"tags":[],"_links":{"self":[{"href":"https:\/\/www.josemarquez.com\/etc\/wp-json\/wp\/v2\/posts\/7169"}],"collection":[{"href":"https:\/\/www.josemarquez.com\/etc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.josemarquez.com\/etc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.josemarquez.com\/etc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.josemarquez.com\/etc\/wp-json\/wp\/v2\/comments?post=7169"}],"version-history":[{"count":0,"href":"https:\/\/www.josemarquez.com\/etc\/wp-json\/wp\/v2\/posts\/7169\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.josemarquez.com\/etc\/wp-json\/wp\/v2\/media?parent=7169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.josemarquez.com\/etc\/wp-json\/wp\/v2\/categories?post=7169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.josemarquez.com\/etc\/wp-json\/wp\/v2\/tags?post=7169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}