Showing posts with label Reuben Hersh. Show all posts
Showing posts with label Reuben Hersh. Show all posts

Sunday, January 5, 2020

Reuben and Martin...


     “The working mathematician is a Platonist on weekdays, a formalist on weekends.”  
                                                                                      — Reuben Hersh

Mathematician and popular prolific writer Reuben Hersh died on Jan. 3, apparently in Santa Fe, NM., but I haven’t seen any details about his demise or major tributes as yet on the Web (no doubt forthcoming).  Hersh started off with a B.A. in English literature in 1947, and only later returned to school to attain his Ph.D. in mathematics in 1962.

Hersh’s writing was almost always interesting and thought-provoking (advocating what he termed a “humanist” view of mathematics) whether one agreed with him or not. He famously feuded with recreational mathematician/writer Martin Gardner as exemplified in a well-known and critical 1997 review Gardner wrote about Hersh’s popular volume, “What Is Mathematics, Really?” Gardner was a vocal and sharp-tongued "Platonist;" Hersh was not. Definitely worth a read if you’ve never seen it (the review):
https://www.latimes.com/archives/la-xpm-1997-oct-12-bk-44915-story.html


Gardner leads off saying he has “such high respect for [Hersh] as a mathematician and such low respect for his philosophy of mathematics.” And it gets harsher from there.
Hersh did eventually reply to Gardner though I couldn’t find a direct, free link to it on the Web (if someone knows of one let us know). This page offers up the first page of Hersh’s response and means for seeing the rest if you so wish:
https://www.deepdyve.com/lp/springer-journals/reply-to-martin-gardner-1IRiQyGw5c

==> ADDENDUM: Thanks to .mau (in comments below) for finding this unformatted link to Hersh’s response:

Many of Hersh's other articles are here:

Martin Gardner, who like Hersh died in his 90's, wanted to believe there was an 'afterlife' following death. Perhaps if there is, he and Reuben are carrying on their fascinating debate somewhere in the great beyond... or, better yet, maybe they've found a final answer.
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ADDENDUM:  Here's one tribute to Reuben that came in a few weeks after his death:
https://www.santafe.edu/news-center/news/tribute-reuben-hersh









Monday, October 17, 2011

Reuben Hersh's Mathematical Experience...


Reuben Hersh has written often of the history, culture, and deeper nature of mathematics. And he is, famously, a NON-Platonist... one who believes mathematics is more a by-product of the human mind than a real extant part of the physical Universe. One of his classic works (with Philip Davis), that most of you have likely read, was "The Mathematical Experience," which Martin Gardner reviewed quite critically back in 1981. I enjoy reading Hersh, and I've been re-reading this particular volume on its 30th anniversary, but having said that, his writing sometimes seems to skim the surface of the material he is tackling. The content bounces back-and-forth between regurgitation of standard pedagogical material and more interesting, but not always convincing, arguments of deeper philosophy. I'm sometimes reminded of the old Wendy's commercial, "Where's the beef?" in reacting to certain subjects broached in this book that don't seem fleshed out as fully as they deserve (the second half of book though is richer than the first half, and Hersh provides plenty of good references for "further study"). Perhaps I just miss the nuance of Hersh's stance on some matters, but I usually find Gardner's arguments more persuasive and articulate. Having said that, more and more respected mathematicians these days seem to be moving toward the minority non-Platonist stance that Hersh has long expounded, so the debate is hardly settled (...indeed, it is probably more UNsettled than ever!).

I mention all of this only because of recently stumbling across this informal response, I'd not seen before, from Hersh to Gardner's original review, and it makes for interesting reading:

http://cs.nyu.edu/pipermail/fom/1997-November/000128.html

The below page links to an Edge interview where Hersh further spells out his notions:

http://edge.org/3rd_culture/hersh/hersh_p1.html

"The Mathematical Experience" remains a classic mathematical opus, with a great breadth of math subject matter (and there is a newer, updated version which I don't own, so not sure how much it differs from the original), and I'm definitely finding it worth a re-read decades later.

Sunday, January 2, 2011

Liking... "Loving and Hating Mathematics"



 "Loving and Hating Mathematics" by Reuben Hersh & Vera John-Steiner -- a review


I received a review copy of "Loving and Hating Mathematics" from Princeton University Press, a new volume from Reuben Hersh and Vera John-Steiner. Any new volume from Hersh is anxiously anticipated, and for the sake of simplicity I'll simply refer to his name throughout this review (it is also my suspicion, though I don't know for certain, that the parts of the book I liked most were primarily penned by him, and the parts I liked less came from the secondary author, who is listed as a linguist and educator, not a mathematician).
I have liked Hersh's writing in the past, although never quite finding it as engaging as I'd expect for the material he covers. The same is true in this volume which, for me, has a sort of Bell Curve of appeal. It starts off so-so, but quickly builds through some interesting, well-done middle chapters, only to then trail off into some shallowness in the last few chapters. For the right audience I do still recommend the volume, as a likeable, if not necessarily lovable volume.

The book is especially for those interested in mathematical culture, persons, and modern math history. It is about the milieu and nature, the sociology and personalities, of mathematics, more than it is about mathematics itself. Mathematical professionals, or those otherwise focused on doing math, may find less of interest here. The lay person with a side interest in mathematics will find over 300 pages about math in a loose sense, but with no significant amount of applied mathematics to get in the way of the narration.
The writing style is a tad dry, although much of the subject matter is so inherently interesting as to carry the material along without flashy writing. For those well-versed in mathematical history (or Hersh's past writings), the book may not add greatly to your knowledge, but it is nice to have so much of this material brought together in an orderly manner in a single volume.

The subtitle of the book, "challenging the myths of the mathematical life," implies that one purpose of the offering is to counter many of the images/stereotypes that people carry around of mathematicians and math study. While the book certainly contains a lot of diverse examples I'm not so sure but that a surprising number of them don't do more to reinforce, rather than counter, the generalizations people often make of the introspective, eccentric, oddball, isolated, anti-social or loner math-type. There are a lot of quirky stories told herein. One entire chapter on "Mathematics As An Addiction" almost makes the problematic lives led by so many math prodigies and logicians seem to be the norm. But other chapters do communicate the aesthetics, feeling, creativity, and sheer joy, that are (to the surprise of some I s'pose) an underlying aspect of doing math. Still, the subject of recreational mathematics, one of the most 'normal,' social, fun areas in all of math is oddly entirely absent.

You get some sense of the overall subject matter of the book from the middle chapter titles which I most enjoyed, as Hersh builds from more singular aspects of mathematics to its more social context:

Ch.2  -- Mathematical Culture
Ch. 3 -- Mathematics as Solace
Ch. 4 -- Mathematics as an Addiction
Ch. 5 -- Friendships and Partnerships
Ch. 6 -- Mathematical Communities

(The latter two chapters above, dealing with mathematicians in association with others, were for me, the best chapters of the book, but all these chapters were quite good.)

Chapter 7 on "Gender and Age in Mathematics" seemed less engaging, but might perhaps mean more to those most directly affected by these components (of math study when being female or older). I felt the last two chapters ("The Teaching of Mathematics" and "Loving and Hating School Mathematics") were a bit more shallow in their material, causing the volume to end somewhat weakly (though on some very important topics). Had the book's final few chapters been as strong as the middle chapters it would have been a great read; as it is, it is still a very good read. The brief biographic section of mathematicians at the end is nice as well, except that it is hard to decipher just why certain of the individuals were included, while a number of modern popularizers are omitted.

I have just two minor beefs with the volume:

1) I'm not sure the title is all that pertinent to the contents. The title is probably intended to be 'catchy,' but almost seems a bit glib. And just by including the phrase "hating mathematics" it could even turn off a segment of its prospective audience, who may indeed harbor long-ago school memories of hating mathematics. In short, I'm not so sure the title won't chase away more readers than it attracts.

2) A second minor concern is that Hersh puts out almost 400 pages on "math culture," including extensive bibliographic listings and an end-compendium of famous mathematicians, and yet never mentions Martin Gardner at all. Gardner and Hersh feuded across the years over the underlying nature of mathematics (with Gardner harshly reviewing Hersh on occasion), so it may be no surprise that Hersh affords him no recognition here. Moreover, Gardner was never a 'professional' mathematician, and, as mentioned above, Hersh essentially doesn't touch on recreational mathematics in this volume at all.
There are many other modern "popularizers" of math who also are not included here besides Gardner, however none have had the impact of Gardner on the current math community. Gardner's fame, contributions, and influence on many mathematicians, is undeniable, and his absence here almost seems a petty oversight, even detracting from the volume's credibility --- to the degree that this book addresses educating, motivating, and encouraging future mathematicians, Gardner and recreational math ought be mentioned.

With those two criticisms out of the way (and they are minor overall), I do recommend the work to the interested mathematics observer... especially if you already love mathematics; this volume will let you soak up more math-thought without having to work at it. If you 'hate' math, well, I don't think this volume will transform you, though even then, some parts may intrigue.

The book, BTW, has a Facebook page devoted to it here:

http://tinyurl.com/2b348e5

Finally, on a side-note, in the course of reading Hersh's book, I discovered that William Byers, author of one of my all-time favorite math books, "How Mathematicians Think," has a new book coming out around May 2011, entitled "The Blind Spot: Science and the Crisis of Uncertainty" --- something definitely to look forward to, especially if you are sympathetic to Hersh's view of mathematics.

Tuesday, September 28, 2010

New Hersh Book Forthcoming

Reuben Hersh has a new book, with Vera John-Steiner, upcoming (December?) that looks to be good: "Loving and Hating Mathematics: Challenging the Myths of Mathematical Life."

Hersh is one of the premier popular explicators of mathematics of the 20th century. But interestingly, he and Martin Gardner (probably the more popular writer, but less-schooled in academic mathematics than Hersh) feuded over the years, with their opposing views of math's relationship to 'reality.'
Gardner was the adamant and traditional "Platonist" believing (as most intuitively do) that mathematics is a true reflection of the real world (outside the human mind). Seems obvious to many... but in fact a surprising number of professional mathematicians hold to a different view of mathematics, as just another creation of the human mind (not objectively discovered, but very much influenced and created by human culture, cognition, psychology, etc.). Remove humans (and their minds) from the Universe and there would be no mathematical laws, as we perceive them, operating.

I didn't realize, until reading his brief Wikipedia entry, that Hersh actually originally earned a B.A. degree in English Literature (Harvard), and worked as a machinist and writer for Scientific American, before eventually getting his Ph.D. in mathematics in 1962 (New York University).
Here is what Gardner had to say of Hersh in one of his many online interviews:
"Reuben Hersh is a marvelous example of a person who thinks that mathematics is entirely a human product and has no reality outside of human culture. He has written a whole book about this called "What Is Mathematics Really?" To Reuben Hersh, mathematics is no different from art or fashions in clothes. It’s a cultural phenomenon. The postmodernists in France have essentially this point of view. And it drives me up the wall. I like to say, 'If two dinosaurs met two other dinosaurs in a clearing, there would be four of them even though the animals would be too stupid to know that.' Of course, the argument as to whether the universe exists outside of the human mind goes back to the middle ages."
(I suspect Hersh might object to at least part of this characterization.) The irreconcilable differences between these two pillars of 20th century math reporting/education is fascinating, and both views have very bright, significant supporters on their sides (if anything, the Hersh view may even have made gains in recent years, though the Platonist view still predominates).

This simple 2008 piece on the Web addresses the issue:

http://www.canadafreepress.com/index.php/article/2805

And Gardner himself has a wonderful 2005 essay (actually a book review), "A Defense of Platonic Realism," reprinted as chapter 9 in his volume "The Jinn From Hyperspace," if you have access to that.
Or, an earlier Gardner essay entitled "How Not To Talk About Mathematics" in his "The Night Is Large" book (chapter 24) covers much the same ground as well (with more specific reference to Hersh). It's a fascinating debate that won't end anytime soon, and that non-mathematicians often aren't even aware of.