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홍차넷
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Warning: Use of undefined constant is_admin - assumed 'is_admin' (this will throw an Error in a future version of PHP) in /home/redtea/html/zero_header.php on line 269
Warning: Use of undefined constant level - assumed 'level' (this will throw an Error in a future version of PHP) in /home/redtea/html/zero_header.php on line 300
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티타임
Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/bbs_title.php on line 21
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- 다양한 주제에 대해 자유롭게 글을 작성하는 게시판입니다.
Warning: Use of undefined constant use_formmail - assumed 'use_formmail' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/lib.php on line 519
Warning: Use of undefined constant use_category - assumed 'use_category' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/include/print_category.php on line 9
전체기타일상/생각꿀팁/강좌방송/연예도서/문학영화의료/건강문화/예술경제생활체육과학/기술철학/종교정치요리/음식역사여행육아/가정IT/컴퓨터음악창작게임스포츠사회오프모임
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Warning: Use of undefined constant name - assumed 'name' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 2
Warning: Use of undefined constant HTTP_HOST - assumed 'HTTP_HOST' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/memo_replace.php on line 3
Warning: Use of undefined constant x - assumed 'x' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 10
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| Date |
Warning: Use of undefined constant reg_date - assumed 'reg_date' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 53 21/02/20 18:31:36 Warning: Use of undefined constant mod_date - assumed 'mod_date' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 56 |
| Name | ar15Lover |
| Subject | (발췌)원시인보다 멍청한 현대인? |
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원문출처: https://www.sciencedirect.com/science/article/pii/S0016328719303507 저자: John Gowdy ===================================================================== 우리는 수렵채집을 하기에는 너무 멍청한가? 농사를 시작한 후 인간의 두뇌 크기는 (1500cc에서 1350cc로)빠르게 줄어들었다. 이 사실은 잘 연구되어있으며, 인종, 성별, 지역을 불문한 사실이다. 예를들어, Henneberg(1988, p. 395)는 홀로세 동안 유럽과 북아프리카의 두개골 용량이 줄어들었음을 지적했다. "남녀를 불문하고 두뇌크기는 매끄럽게, 극심하게, 불가역적으로, 기하급수적으로 감소했다. 남성은 157cc(9.9%) 감소했고, 여성은 261cc(17.4%) 감소했다. 이 차이는 호모 에렉투스와 호모 사피엔스 사피엔스의 차이와 유사하다." 만약 우리의 신체가 두뇌가 줄어든 만큼 줄어들었다면, 인간의 평균 신장은 137cm, 평균 몸무게는 29kg이었을 것이다. (http://superscholar.org/shrinking-brain/) Hawks(2011)에 따르면, 지난 1만년 간의 두뇌 크기 감소 속도는 그 이전 80만년 간 두뇌 크기가 증가하던 속도의 36배에 달한다. 우리의 두뇌가 작아지면서 더욱 효율적으로 변해 옛날만큼 똑똑하거나, 더 똑똑해졌다고 볼 증거는 없다. 우리의 두뇌가 수축하면서 더 정교해졌다고 볼 증거는 없다.(http://superscholar.org/shrinking-brain/) 더 큰 문제는, 높은 이산화탄소 농도가 인지능력을 감퇴시킨다는 증거가 있다는 것이다. 최근 연구는 이산화탄소 농도가 950ppm일 때 인지능력은 15% 감소하며, 1400ppm일 때 50% 감소한다는 사실을 발견했다.(https://www.yaleclimateconnections.org/2016/07/indoor-co2-dumb-and-dumber/) 다음 세기 중 환경 이산화탄소 농도가 1000ppm에 이를 가능성이 높다. Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 133 Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 146 Warning: Use of undefined constant vote - assumed 'vote' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 161 2 이 게시판에 등록된 ar15Lover님의 최근 게시물
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Warning: Use of undefined constant ismember - assumed 'ismember' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 6
Warning: Use of undefined constant file_name - assumed 'file_name' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 28
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153700 class="iamcmt" style="display:none;"> Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 66
153700 class='vcm '>
Warning: Use of undefined constant x - assumed 'x' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 70
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Warning: Use of undefined constant ismember - assumed 'ismember' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 117
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Warning: Use of undefined constant ismember - assumed 'ismember' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 119
Warning: Use of undefined constant ismember - assumed 'ismember' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 120
Warning: Use of undefined constant ismember - assumed 'ismember' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 121
153700'> 쿠팡
Warning: Use of undefined constant mod_date - assumed 'mod_date' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 133
Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 140
Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 140
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21/02/20 18:42
153700>삭제 주소복사
Warning: Use of undefined constant level - assumed 'level' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 150
???
인간의 두뇌 용량은 지속적으로 증가하는 방향으로 진화한 것으로 알고 있는데 말입니다...
Warning: Use of undefined constant level - assumed 'level' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 158
Warning: Use of undefined constant password - assumed 'password' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 166
Warning: Use of undefined constant vote - assumed 'vote' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 171
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