{"id":1205,"date":"2013-12-24T09:26:44","date_gmt":"2013-12-24T09:26:44","guid":{"rendered":"http:\/\/graham-kendall.com\/blog\/?p=1205"},"modified":"2020-09-22T01:58:24","modified_gmt":"2020-09-22T01:58:24","slug":"can-santa-deliver-all-those-presents-in-24-hours-theconversation-discusses-the-science","status":"publish","type":"post","link":"https:\/\/graham-kendall.com\/blog\/can-santa-deliver-all-those-presents-in-24-hours-theconversation-discusses-the-science\/","title":{"rendered":"Can the Traveling Salesman Problem help Santa deliver presents?"},"content":{"rendered":"<p>In a few hours Santa will begin his annual tour of the world, dropping down chimney&#8217;s and delivering presents to all the children who have behaved themselves this year. He may not realise it, but he is solving a Traveling Salesman Problem as he plans which route to take.<\/p>\n<p>What is more amazing that he can deliver all these presents in a single night, even if we account for the fact that time differences gives him some extra time. How does he manage to do this?<\/p>\n<p>I recently publsihed a <a title=\"Link to UoN post\" href=\"http:\/\/blogs.nottingham.ac.uk\/malaysiaknowledgetransfer\/2013\/12\/12\/can-santa-travel-faster-than-the-speed-of-light\/\" target=\"_blank\" rel=\"noopener noreferrer\">post<\/a> that suggested that if Santa could travel faster than the speed of light then all of his problems would be solved. I also published another <a title=\"Link to UoN post\" href=\"http:\/\/blogs.nottingham.ac.uk\/malaysiaknowledgetransfer\/2013\/12\/06\/what-route-will-santa-take-this-christmas\/\" target=\"_blank\" rel=\"noopener noreferrer\">post<\/a> that enabled you to add your home to Santa&#8217;s list, so that he does not forget you (we made sure that UNMC would get a visit!).<\/p>\n<p>Some of the science that might also help Santa is given in this <a title=\"Link to TheConversation piece\" href=\"https:\/\/theconversation.com\/help-solve-santas-logistics-troubles-with-a-little-maths-21629\" target=\"_blank\" rel=\"noopener noreferrer\">piece<\/a> which has just been published in\u00a0<a title=\"Link to TheConversation\" href=\"https:\/\/theconversation.com\/uk\" target=\"_blank\" rel=\"noopener noreferrer\">TheConversation<\/a>, specifically in the <a title=\"Link to TheConversation, Science+Technology section\" href=\"https:\/\/theconversation.com\/uk\/technology\" target=\"_blank\" rel=\"noopener noreferrer\">Science + Technology<\/a> section. It considers whether the Traveling Salesman Problems is the answer to all Santa&#8217;s problems.<\/p>\n<p>Note: I also published a similar <a title=\"Link to UoN post\" href=\"http:\/\/blogs.nottingham.ac.uk\/malaysiaknowledgetransfer\/2013\/12\/24\/can-santa-deliver-all-those-presents-in-24-hours-theconversation-discusses-the-science\/\" target=\"_blank\" rel=\"noopener noreferrer\">post<\/a> at the University of Nottingham<\/p>\n<figure id=\"attachment_1208\" aria-describedby=\"caption-attachment-1208\" style=\"width: 300px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/graham-kendall.com\/blog\/wp-content\/uploads\/2013\/12\/World-airline-routemap-2009.jpg\"><img decoding=\"async\" class=\"size-medium wp-image-1208\" alt=\"World Airline Route Maps: Downloaded from Google (22 Dec 2013, labaled as free to reuse) \u2013 URL: http:\/\/en.wikipedia.org\/wiki\/File:World-airline-routemap-2009.png\" src=\"https:\/\/graham-kendall.com\/blog\/wp-content\/uploads\/2013\/12\/World-airline-routemap-2009-300x150.jpg\" width=\"300\" height=\"150\" srcset=\"https:\/\/graham-kendall.com\/blog\/wp-content\/uploads\/2013\/12\/World-airline-routemap-2009-300x150.jpg 300w, https:\/\/graham-kendall.com\/blog\/wp-content\/uploads\/2013\/12\/World-airline-routemap-2009-1024x512.jpg 1024w, https:\/\/graham-kendall.com\/blog\/wp-content\/uploads\/2013\/12\/World-airline-routemap-2009-500x250.jpg 500w, https:\/\/graham-kendall.com\/blog\/wp-content\/uploads\/2013\/12\/World-airline-routemap-2009.jpg 2048w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-1208\" class=\"wp-caption-text\">World Airline Route Maps: Downloaded from Google (22 Dec 2013, labaled as free to reuse) \u2013 URL: http:\/\/en.wikipedia.org\/wiki\/File:World-airline-routemap-2009.png<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>In a few hours Santa will begin his annual tour of the world, dropping down chimney&#8217;s and delivering presents to all the children who have behaved themselves this year. He may not realise it, but he is solving a Traveling Salesman Problem as he plans which route to take. What is more amazing that he [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1208,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[177,156],"tags":[],"class_list":["post-1205","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-archive","category-media"],"_links":{"self":[{"href":"https:\/\/graham-kendall.com\/blog\/wp-json\/wp\/v2\/posts\/1205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/graham-kendall.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/graham-kendall.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/graham-kendall.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/graham-kendall.com\/blog\/wp-json\/wp\/v2\/comments?post=1205"}],"version-history":[{"count":5,"href":"https:\/\/graham-kendall.com\/blog\/wp-json\/wp\/v2\/posts\/1205\/revisions"}],"predecessor-version":[{"id":1624,"href":"https:\/\/graham-kendall.com\/blog\/wp-json\/wp\/v2\/posts\/1205\/revisions\/1624"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/graham-kendall.com\/blog\/wp-json\/wp\/v2\/media\/1208"}],"wp:attachment":[{"href":"https:\/\/graham-kendall.com\/blog\/wp-json\/wp\/v2\/media?parent=1205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/graham-kendall.com\/blog\/wp-json\/wp\/v2\/categories?post=1205"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/graham-kendall.com\/blog\/wp-json\/wp\/v2\/tags?post=1205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}