{"id":232197,"date":"2026-02-27T05:26:30","date_gmt":"2026-02-27T11:26:30","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/02\/why-you-cant-tie-knots-in-four-dimensions"},"modified":"2026-02-27T05:26:30","modified_gmt":"2026-02-27T11:26:30","slug":"why-you-cant-tie-knots-in-four-dimensions","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/02\/why-you-cant-tie-knots-in-four-dimensions","title":{"rendered":"Why you can\u2019t tie knots in four dimensions"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/why-you-cant-tie-knots-in-four-dimensions.jpg\"><\/a><\/p>\n<p>We all know we live in three-dimensional space. But what does it mean when people talk about four dimensions? Is it just a bigger kind of space? Is it \u201c<a href=\"https:\/\/theconversation.com\/what-exactly-is-space-time-259630\" target=\"_blank\">space-time<\/a>,\u201d the popular idea which emerged from Einstein\u2019s <a href=\"https:\/\/www.space.com\/17661-theory-general-relativity.html\" target=\"_blank\">theory of relativity<\/a>?<\/p>\n<p>If you have wondered what four dimensions really look like, you may have come across drawings of a \u201cfour-dimensional cube.\u201d But our brains are wired to interpret drawings on flat paper as two-or at most three-dimensional, not four-dimensional.<\/p>\n<p>The almost insurmountable difficulty of visualizing the fourth dimension has inspired <a href=\"https:\/\/www.ams.org\/\/journals\/notices\/200704\/rev-phillips-web.pdf\" target=\"_blank\">mathematicians, physicists, writers and even some artists<\/a> for centuries. But even if we can\u2019t quite imagine it, we can understand it.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We all know we live in three-dimensional space. But what does it mean when people talk about four dimensions? Is it just a bigger kind of space? Is it \u201cspace-time,\u201d the popular idea which emerged from Einstein\u2019s theory of relativity? If you have wondered what four dimensions really look like, you may have come across [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2229,47,219],"tags":[],"class_list":["post-232197","post","type-post","status-publish","format-standard","hentry","category-mathematics","category-neuroscience","category-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/232197","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=232197"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/232197\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=232197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=232197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=232197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}