{"id":10686,"date":"2025-03-24T08:00:00","date_gmt":"2025-03-24T12:00:00","guid":{"rendered":"https:\/\/meadowparty.com\/blog\/?p=10686"},"modified":"2025-03-23T12:23:52","modified_gmt":"2025-03-23T16:23:52","slug":"fantastic-numbers-and-where-to-find-them","status":"publish","type":"post","link":"https:\/\/meadowparty.com\/blog\/2025\/03\/24\/fantastic-numbers-and-where-to-find-them\/","title":{"rendered":"Fantastic Numbers and Where to Find Them."},"content":{"rendered":"\n<p>Prof. Antonio Padilla is a theoretical physicist and cosmologist at the University of Nottingham who has also appeared numerous times on the Numberphile Youtube series, including this incredibly popular video where he shows how the sum of all natural numbers (1 + 2 + 3 + 4 + \u2026 ?) <a href=\"https:\/\/www.youtube.com\/watch?v=w-I6XTVZXww\">is actually -1\/12<\/a>. It\u2019s ridiculous \u2013 Padilla concedes that it looks like \u201ca bit of mathematical hocus-pocus\u201d, but the pudding is in the proof, or something, and he points out that 1) this only works if you\u2019re adding all of the natural numbers, which means you don\u2019t stop at any point, and 2) this sum appears in physics, where we don\u2019t see infinities (and if we do, it\u2019s a problem).<\/p>\n\n\n\n<p>Padilla describes the interplay between physics and some numbers at both extremes of the mathematical scale, both the very small and the very large, in his book <a href=\"https:\/\/bookshop.org\/a\/2960\/9781250872821\"><em>Fantastic Numbers and Where to Find Them: A Journey to the Edge of Physics<\/em><\/a>, an intense but mostly accessible book that runs through nine distinct numbers, from zero to a googolplex to 10<sup>-120<\/sup> to infinity, and uses them to explain some key concepts or findings about the nature of everything. He waltzes through the history of math \u2013 just about every famous figure there makes an appearance at some point, which will make you realize just how many great mathematicians ended up losing their marbles \u2013 and just about always finishes up somewhere in the realm of quantum physics, whether it\u2019s things we know or things we think we know, or occasionally things we still don\u2019t know. There\u2019s even a chapter on the cosmological constant, which was in the news just this past week with the revelations <a href=\"https:\/\/www.scientificamerican.com\/article\/frozen-cosmic-sound-bubbles-suggest-dark-energy-is-shockingly-changeable\/\">that dark energy isn\u2019t as immutable as we believed<\/a>, which implies that the cosmological constant is, in fact, inconstant.<\/p>\n\n\n\n<p>When Padilla is talking physics and cosmology, at either end of the scale, he\u2019s engaging and by and large easy to follow, other than perhaps near the end of the book when he\u2019s introduced the panoply of particles that populate the quantum world \u2013 all the quarks, leptons, and gauge bosons that we know or think exist \u2013 where keeping any of them straight was a bit more than I could handle. It doesn\u2019t end up mattering much to the narratives of those chapters, as Padilla\u2019s point is the relevance of the numbers in question, although I ended up a little frustrated that I didn\u2019t entirely know what was going on at some points.<\/p>\n\n\n\n<script src=https:\/\/bookshop.org\/widgets.js data-type=\"book\" data-affiliate-id=\"2960\" data-sku=\"9781250872821\"><\/script>\n\n\n\n<p>It\u2019s the mathy stuff where Padilla struggles to communicate in a way that a typical reader might follow, and perhaps that\u2019s just a function of the size of the numbers he\u2019s discussing. The chapter on the number TREE(3), which is so large that <a href=\"https:\/\/www.popularmechanics.com\/science\/math\/a28725\/number-tree3\/\">we can\u2019t even notate it<\/a>, let alone comprehend it, ultimately lost me not in its prose but in its sea of notation. TREE(3) is much larger than the number of atoms scientists believe exist in the entire universe (around 10<sup>80<\/sup>, itself a number that we can\u2019t easily envision), a number so big that the universe won\u2019t \u201callow\u201d it to exist \u2013 according to <a href=\"https:\/\/en.wikipedia.org\/wiki\/Poincar%C3%A9_recurrence_theorem\">the Poincar\u00e9 recurrence theorem<\/a>, at least, which says that the universe will \u201creset\u201d before TREE(3) happens in any sense of the word. Padilla uses TREE(3) to explain that theorem and the possibility that the universe is a hologram, that we live in two dimensions and only think we perceive the third, but by the end of that chapter I didn\u2019t understand why TREE(3) got us there in the first place. (It doesn\u2019t help that Padilla discusses all of this several chapters before he gets into string theory, which underpins the holographic principle, so we\u2019re walking without a net for a while.)<\/p>\n\n\n\n<p>Padilla is a gifted communicator, clearly, and his enthusiasm for the subject comes through everywhere in the book \u2013 it\u2019s just that the topic itself is abstruse and assumes some familiarity with physics and\/or with some branches of math like infinite series and set theory. He\u2019s better at explaining concepts like particle spin, which he points out isn\u2019t spin like what we\u2019re talking about in baseball but an innate characteristic of a particle (any more than red or green quarks have those actual colors), than at explaining concepts like the nested powers of TREE(3) or G\u00f6del\u2019s incompleteness proof. It all left me with the sense that I\u2019d enjoyed the book, but that the audience for it might be very narrow \u2013 you have to know enough to follow him through his various rambles through math and physics, but not so much that you already know all of this stuff. I was at least lucky enough to mostly be in the first camp, even though I got lost a few times, but that\u2019s just because I love these topics and have read a lot of books about them. It&#8217;s not the physics I learned in high school, and not really the math I learned there either.<\/p>\n\n\n\n<p>Next up: Michael Swanwick\u2019s <em><a href=\"https:\/\/bookshop.org\/a\/2960\/9781250862495\" data-type=\"link\" data-id=\"https:\/\/bookshop.org\/a\/2960\/9781250862495\">Stations of the Tide<\/a><\/em>, winner of the 1991 Nebula Award for Best Novel.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Prof. Antonio Padilla is a theoretical physicist and cosmologist at the University of Nottingham who has also appeared numerous times on the Numberphile Youtube series, including this incredibly popular video where he shows how the sum of all natural numbers (1 + 2 + 3 + 4 + \u2026 ?) is actually -1\/12. It\u2019s ridiculous [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[163,553,225,776,799],"class_list":["post-10686","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-history-of-science","tag-math","tag-non-fiction","tag-physics","tag-science","entry"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/meadowparty.com\/blog\/wp-json\/wp\/v2\/posts\/10686","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/meadowparty.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/meadowparty.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/meadowparty.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/meadowparty.com\/blog\/wp-json\/wp\/v2\/comments?post=10686"}],"version-history":[{"count":1,"href":"https:\/\/meadowparty.com\/blog\/wp-json\/wp\/v2\/posts\/10686\/revisions"}],"predecessor-version":[{"id":10687,"href":"https:\/\/meadowparty.com\/blog\/wp-json\/wp\/v2\/posts\/10686\/revisions\/10687"}],"wp:attachment":[{"href":"https:\/\/meadowparty.com\/blog\/wp-json\/wp\/v2\/media?parent=10686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/meadowparty.com\/blog\/wp-json\/wp\/v2\/categories?post=10686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/meadowparty.com\/blog\/wp-json\/wp\/v2\/tags?post=10686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}