{"id":652,"date":"1998-07-23T23:03:29","date_gmt":"1998-07-23T14:03:29","guid":{"rendered":"http:\/\/terzeron.com\/?p=652"},"modified":"1998-07-23T23:03:29","modified_gmt":"1998-07-23T14:03:29","slug":"y2k-%eb%ac%b8%ec%a0%9c%ec%99%80-%ea%b7%80%eb%82%a9%eb%b2%95%ec%9d%98-%ec%83%88%eb%a1%9c%ec%9a%b4-%ec%88%98%ec%88%98%ea%bb%98%eb%81%bc","status":"publish","type":"post","link":"https:\/\/terzeron.com\/?p=652","title":{"rendered":"Y2K \ubb38\uc81c\uc640 \uadc0\ub0a9\ubc95\uc758 \uc0c8\ub85c\uc6b4 \uc218\uc218\uaed8\ub07c"},"content":{"rendered":"<p>The Year-2000 Problem and the New Riddle of Induction &#8211; Hal Berghel<br \/>\nY2K \ubb38\uc81c\uc640 \uadc0\ub0a9\ubc95\uc758 \uc0c8\ub85c\uc6b4 \uc218\uc218\uaed8\ub07c<\/p>\n<p>\uac1c\uc694<br \/>\nY2K problem \ub610\ub294 \ubc00\ub808\ub2c8\uc5c4 \ubc84\uadf8\ub77c \ubd88\ub9ac\uc6b0\ub294 \ubb38\uc81c\ub294 2000\ub144\uc774 \ub418\uba74<br \/>\n\ucef4\ud4e8\ud130(\uc18c\ud504\ud2b8\uc6e8\uc5b4\uc640 \ud558\ub4dc\uc6e8\uc5b4 \ubaa8\ub450)\ub4e4\uc774 2000\ub144\uc744 1900\ub144\uc73c\ub85c \uc778\uc2dd\ud558\uac8c<br \/>\n\ub418\uc5b4 \uc5ec\ub7ec \uc0ac\uace0\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\ub2e4\ub294 \ubb38\uc81c\ub97c \ub9d0\ud55c\ub2e4.<\/p>\n<p>Wegner<br \/>\nAlgorithmic computing is weaker than interactive computing.<br \/>\nInteraction machine cannot be expressed by Turing machines<br \/>\nand by first-order logic.<\/p>\n<p>Berghel\uc758 \ubc18\ub860<br \/>\nPractical interactive services like banking or airline reservations<br \/>\ncannot inherently be realized by non-interactive(Turing machine)<br \/>\nsystems.<\/p>\n<p>Year-2000(Y2K) problem\uc740 turing machine\uc774 \uac00\uc9c0\ub294 \uc704\uc640 \uac19\uc740 \ubb38\uc81c\uc810\uc744<br \/>\n\ub4dc\ub7ec\ub0b4\ub294 \uc608\uc774\ub2e4.<\/p>\n<p>Y2K \ubb38\uc81c\uac00 \uc77c\uc5b4\ub0a0 \uc218 \uc788\uac8c \ub41c \uc5ed\uc0ac\uc801 \ubc30\uacbd\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4. \uc2dc\uc2a4\ud15c<br \/>\n\uac1c\ubc1c\uc744 \uc694\uad6c\ud55c \uae30\uc5c5\ub4e4\uc740 memory\ub97c \uc544\ub07c\uae30 \uc704\ud574 \ub0a0\uc9dc\ub97c \uc800\uc7a5\ud558\ub294 \ubcc0\uc218\ub97c<br \/>\n\uaca8\uc6b0 2\ubc14\uc774\ud2b8 \uc815\ub3c4\uc758 \ud06c\uae30\ub85c \uc81c\ud55c\ud558\ub3c4\ub85d \uac1c\ubc1c\uc5c5\uccb4\uc5d0 \uc8fc\ubb38\ud558\uc600\ub2e4. \uba87<br \/>\n\ubc14\uc774\ud2b8\ub9cc \ub354 \uc0ac\uc6a9\ud588\ub354\ub77c\ub3c4 \ud0dc\uc591\uc758 \uc218\uba85\uc744 \ub118\uae30\ub294 \uc2dc\uac04\ub3d9\uc548 \uadf8\ub7ec\ud55c<br \/>\n\ubb38\uc81c\uac00 \ubc1c\uc0dd\ud558\uc9c0 \uc54a\uc744 \uc218 \uc788\uc5c8\ub358 \uac83\uc774\ub2e4.<\/p>\n<p>DOS<br \/>\n((year-1980)*512)+(month*32)+day<\/p>\n<p>Unix<br \/>\n70\ub144 1\uc6d4 1\uc77c\ubd80\ud130 2*31\ucd08 = 2038\ub144 1\uc6d4 18\uc77c<br \/>\n\uc9c0\uc9c8\ud559\uc801\uc778 \uc2dc\uac04 40\uc5b5\ub144<br \/>\n64 bits = 8 bytes<\/p>\n<p>Induction\uc758 \uc218\uc218\uaed8\ub07c<\/p>\n<p>old riddle : \uadc0\ub0a9\ubc95\uc740 \uc815\ub2f9\ud654\ub97c \ud558\uae30 \uc704\ud574 \ubaa8\ub4e0 \uac83\uc774 \uac00\uc124\uc744 \ub9cc\uc871\uc2dc\ucf1c\uc57c<br \/>\n\ud558\ub294\ub370, &#8216;\ubaa8\ub4e0&#8217; \uac83\uc5d0 \ub300\ud574\uc11c \uac00\uc124\uc744 \uc801\uc6a9\ud574 \ubcfc \uc218\uac00 \uc5c6\ub2e4. &#8211;> \uc218\ud559\uc801<br \/>\n\uadc0\ub0a9\ubc95, \uc6d0\ucd08\uc801 \ubcf8\ub2a5(?), \ub2e8\uc21c\ud654 \ub4f1\uc5d0 \uc758\ud574 \ud574\uc18c\ub420 \uc218 \uc788\ub294 \ubb38\uc81c\uc774\ub2e4.<\/p>\n<p>new riddle : \uc784\uc758\uc758 \uc2dc\uac01 t\uc5d0 \ub300\ud574\uc11c \uac00\uc124\uc744 \ub9cc\uc871\ud588\ub2e4\uace0 \ud574\uc11c t \uc774\ud6c4\uc5d0\ub3c4<br \/>\n\ub9cc\uc871\ud55c\ub2e4\uace0 \uc8fc\uc7a5\ud560 \uc218 \uc5c6\ub2e4. Y2K\ubb38\uc81c\ub294 \ubc14\ub85c \uc774\ub7ec\ud55c \uadc0\ub0a9\ubc95\uc758 paradox\uc5d0<br \/>\n\uc758\ud574\uc11c \ubc1c\uc0dd\ud558\ub294 \ubb38\uc81c\uc774\ub2e4.<\/p>\n<p>\ud574\uacb0<\/p>\n<p>\ubbf8\uad6d \ub0b4 \uc18c\ud504\ud2b8\uc6e8\uc5b4\uc758 Y2K\ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud574 \ud544\uc694\ud55c \ube44\uc6a9\uc740 \uc57d 700\uc5b5<br \/>\n\ub2ec\ub7ec\uc774\uba70, \uc911\uac04\uae09\uc758 \ud68c\uc0ac\uac00 95\ub144\uc5d0 \ubc84\uadf8\ub97c \uc7a1\uae30 \uc704\ud574 \ud504\ub85c\uc81d\ud2b8\ub97c \uc2dc\uc791\ud558\ub294<br \/>\n\uac83\uc774 \ubc14\ub78c\uc9c1\ud558\uba70, 97\ub144 10\uc6d4\uc774 \uadf8 \ub9c8\uc9c0\ub9c9 \uc2dc\uae30\ub77c\uace0 \ud55c\ub2e4.<\/p>\n<div class=\"fb-background-color\">\n\t\t\t  <div \n\t\t\t  \tclass = \"fb-comments\" \n\t\t\t  \tdata-href = \"https:\/\/terzeron.com\/?p=652\"\n\t\t\t  \tdata-numposts = \"100\"\n\t\t\t  \tdata-lazy = \"true\"\n\t\t\t\tdata-colorscheme = \"light\"\n\t\t\t\tdata-order-by = \"time\"\n\t\t\t\tdata-mobile=true>\n\t\t\t  <\/div><\/div>\n\t\t  <style>\n\t\t    .fb-background-color {\n\t\t\t\tbackground: #ffffff !important;\n\t\t\t}\n\t\t\t.fb_iframe_widget_fluid_desktop iframe {\n\t\t\t    width: 100% !important;\n\t\t\t}\n\t\t  <\/style>\n\t\t  ","protected":false},"excerpt":{"rendered":"<p>The Year-2000 Problem and the New Riddle of Induction &#8211; Hal Berghel Y2K \ubb38\uc81c\uc640 \uadc0\ub0a9\ubc95\uc758 \uc0c8\ub85c\uc6b4 \uc218\uc218\uaed8\ub07c \uac1c\uc694 Y2K problem \ub610\ub294 \ubc00\ub808\ub2c8\uc5c4 \ubc84\uadf8\ub77c \ubd88\ub9ac\uc6b0\ub294 \ubb38\uc81c\ub294 2000\ub144\uc774 \ub418\uba74 \ucef4\ud4e8\ud130(\uc18c\ud504\ud2b8\uc6e8\uc5b4\uc640 \ud558\ub4dc\uc6e8\uc5b4 \ubaa8\ub450)\ub4e4\uc774 2000\ub144\uc744 1900\ub144\uc73c\ub85c \uc778\uc2dd\ud558\uac8c \ub418\uc5b4 \uc5ec\ub7ec \uc0ac\uace0\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\ub2e4\ub294 \ubb38\uc81c\ub97c &hellip; <a href=\"https:\/\/terzeron.com\/?p=652\">\uacc4\uc18d \uc77d\uae30 <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"categories":[18,9],"tags":[],"class_list":["post-652","post","type-post","status-publish","format-standard","hentry","category-18","category-9"],"_links":{"self":[{"href":"https:\/\/terzeron.com\/index.php?rest_route=\/wp\/v2\/posts\/652","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/terzeron.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/terzeron.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/terzeron.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/terzeron.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=652"}],"version-history":[{"count":0,"href":"https:\/\/terzeron.com\/index.php?rest_route=\/wp\/v2\/posts\/652\/revisions"}],"wp:attachment":[{"href":"https:\/\/terzeron.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/terzeron.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=652"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/terzeron.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}