Author Archives: tmurphy

A Reading Journey

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Image by G.C. from Pixabay

I intend to resume semi-regular postings in the near term, and am sitting on a couple dozen post ideas in various stages of development. In puzzling out what order I should put them in, I decided to start with something of a meta-post that lays some groundwork for a number of the future entries.

What I have in mind is to recapture my own journey over the last couple of years, which has resulted in an unexpected shift in my emphasis and awareness. By sharing key elements of my own journey, perhaps you can experience something similar. In any case, you might treat it as a belated (bloated?) summer reading list.

Let’s start just by capturing the chronological list, and then I’ll say a few things about the significance of each item.

  1. Energy and Human Ambitions textbook; especially Epilogue; Appendix D.5 and D.6
  2. Sapiens, by Yuval Noah Harari
  3. Human Exceptionalism (Do the Math post)
  4. Daniel Schmachtenberger on The Great Simplification
  5. Daniel Quinn’s books: Ishmael; The Story of B; My Ishmael; Beyond Civilization
  6. Post-Ishmael Do the Math posts (Sticks; Love; Cults and a Story)
  7. An Inconvenient Apocalypse, by Wes Jackson and Robert Jensen
  8. We Are the Middle of Forever by Dahr Jamail and Stan Rushworth
  9. Braiding Sweetgrass by Robin Wall Kimmerer
  10. The Myth of Human Supremacy by Derrick Jensen
  11. Bitter Harvest by Lisi Krall
  12. Hospicing Modernity by Vanessa Machado de Oliveira

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A One-hour Message

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In May of this year, I had the opportunity to give a talk to my department on the matters that concern me. What would I say? How could I pack 20 years of learning, Do the Math writing, and recent perspectives into a one-hour talk for my physics/astrophysics colleagues and for students just beginning their professional journeys? How could I have the biggest impact without coming off as being nuts?

As with many things we do in life, I have mixed feelings about the result: things I should have said; things I could have said differently/better; answers to questions that could have been less clumsy. But overall it seems to have worked. While people were not beating down my door to have further conversations, almost anyone I ran into from the department in the weeks that followed would bring it up—indicating that they had been ruminating on the content and expressing further curiosity. It helps that these are people who have known me for years in another context, but it was still a relief to not simply be dismissed as having veered from the one important path: physics research.

Below is a video capture of the event over a zoom channel. The slides are shown well, but the audio quality varies depending on my movements (could be worse). Questions from the audience are hard to make out. Zoom does amazing things for noise suppression, which also applies to audience reactions (applause, laughter). But hey, you get what you pay for.

The theme of the talk is very similar to that of the shorter video I shared recently. It is also reflected in an article featured in a special sustainability issue of The Physics Teacher in September (below is a PDF of the final paper). So I’m “making a lot of hay” out of this approach, of late.

Murphy-Limits-TPTDownload

It has been a while since I posted new written content to Do the Math. I have a backlog of ideas to share, so stay tuned—it’s on the way.

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Here We Are

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I was asked some months ago by the Australian Foodweb Education organization to participate in their Here We Are project. The idea is to reflect on the statement: “Here we are, alive, at this moment, in this place, together.”

Over the course of several months, I occasionally tried a written-form response, which might later form the basis for a recording. But I was never quite happy with the result—in part because my viewpoint has been rapidly evolving, making it hard to be completely satisfied.

Finally, in April, I felt ready. So I sat on a grassy slope in La Jolla soaking in a chorus of frog song and jotted down bullet points in some semblance of order. I am not talented enough to read a script without it sounding like I’m reading a script, so kept it light. But when I got to my office to make a recording, I wrote the prompt on my whiteboard and realized I could dissect the sentence in a way that captured my perspectives pretty well. I was able to adapt most of the frog-inspired points into something that seems well designed, but in truth emerged rather rapidly.

For my zoom-recorded session background, I chose from the two or three stock images one that both reminds me of the grassy slope where I committed ideas to paper, and fittingly puts me in my place with respect to nature.

Okay—that’s enough backstory. Here is the video recording, and what follows is a relatively faithful transcript, removing a surprising number of “ums” and “you knows,” and patching up a few things with [insertions]. It’s not as polished as a written work, but it is what it is. I did take the liberty of inserting two bits that it pains me not to have included in the recording, which I represent in green font.

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Keeping Up On Appearances

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Over the last year or so, a number of audio/video productions have accumulated in which I have had an opportunity to express my evolving thoughts. Being challenged in the art of self promotion (Do the Math is the closest I come to social media), I tend not to link to everything that comes along. Yet, I recognize that some readers may value pointers to these other formats. So this brief post is an aggregation of recent appearances, to put it all in one place, arranged by context. Still feels a little gross.

The first—and most recent—pair of links relates to the latest Do the Math post on The Simple Story of Civilization. This post started as one page on a bedside note pad, scribbled by coincidence the night before a scheduled podcast interview with Hart Hagan. Although I did not connect the two, I did mention the outline to Hart when we began the zoom session, in case he found it interesting. To my surprise, he launched the conversation with a rough run-through of the script. Here is the video chat:

Shortly after this recording, I wrote up and released the post—which inspired Nate Hagens to record a targeted “Frankly” that follows the thread of the post:

About a year prior to this, I dropped in on the Crazy Town podcast trio on a road trip, and recorded this episode with them (also can try this link). It was a fun discussion about physical limits and what features future success must have (I did link this previously on Do the Math). Update 2023.02.21: In the initial posting, I forgot to include this podcast episode (51) from Breaking Down: Collapse from September of 2021.

Early in 2022, Nate Hagens included me on his new podcast called The Great Simplification, as episode 18. I am pleased to be in such good company: the other guests on the podcast have been insightful and thought-provoking. In episode 18, Nate and I explore physical limits to growth—echoing some of the foundational posts of the Do the Math blog.

Update 2023.02.21: Hart Hagan recently did a second podcast interview with me:

The next video is a relatively high production-value interview by the UC San Diego Division of Physical Sciences about my free textbook. (I put this up before, but also include here for completeness.)

This next pair relates to my involvement in the formation of the Planetary Limits Academic Network (PLAN; see post about it here). First I’ll point to a radio interview of myself and PLAN co-founder Melody LeHew, in which we discuss the predicament, and what PLAN might do in this context. Next is a video interview for Scientists’ Warning along with PLAN instigator Ben McCall, in which we address the challenges associated with radical change in our academic trajectories:

So I think that’s all I want to point out here. Anyway, I hope at least some of these provide value.

Oh—here’s something else that came along after I made this posting: it’s a joint interview of myself and Ugo Bardi on the topic of collapse.

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Holiday Haikus

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I’m no poet, preferring prose for its clarity and completeness. So please forgive this amateur attempt to capture two opposing views on planetary limits in haiku form. One gracefully respects constraints, while the other…well, you’ll see.

Just as in haiku
Earth imposes hard limits
We must live within

And in the red corner:

It’s preposterous
To think that human imagination is lim…

Buzzer. Disqualified. Nice try. And the winner is…

Wishing you peace and meaning this holiday season.

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The Simple Story of Civilization

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[Note: This post inspired a podcast interview that traces a similar path.]

Image by Mystic Art Design from Pixabay

The stories we fashion about ourselves are heavily influenced by our short life spans during an age of unprecedented complexity. We humans, it would seem, are unfathomably complicated creatures who defy simple “just-so” characterizations. Animals, or humans tens of thousands of years ago are fair game for simple stories, but not so for transcendent modern humans.

Two major problems I have with this attitude are that 1) we are animals, and 2) we have exactly the same hardware (albeit with slightly smaller brains) as we had 100,000 years ago.

So allow me to pull back from our present age of baffling complexity to outline a simple story covering the broad sweep of the human saga. The result may be a little startling, and, for a number of readers, sure to be rejected by cultural antibodies as “not applicable” (see also my views of our civilization as a cult).

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Finite Feeding Frenzy

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Image by ariesjay castillo from Pixabay

You may be aware that our food industry is heavily dependent on fossil fuels, to the point that it takes about 10 kcal of energy input to deliver 1 kcal of consumed food. The enormous energy multiplier is due to extensively mechanized plowing, harvesting, processing, and delivery of food; fossil-fueled fertilization (via methane feedstock); refrigeration and preparation; then of course food waste. In olden times, when all agricultural energy came from muscle power that needed to be fed, the system would collapse (i.e., starve and fail) if energy inputs exceeded energy ingested.

Some have phrased our current practice as “eating fossil fuels,” and in fact a 2006 book by Dale Allen Pfeiffer had this title. So what? More power to us—literally.

The problem, people, is that fossil fuels are finite. We have already consumed a fair fraction (roughly half?) of the accessible allotment. And before concluding that we therefore have a century or so before needing to worry about the consequences, realize that the inflection point happens around the halfway mark, wherein decreasing ease of access tends to result in ever-decreasing output rates in the second-half of the resource. We see this behavior in individual oil fields and in regional (country-scale) aggregations. The low-hanging fruit is taken first, sensibly, so that what’s left is more stubborn.

Because human population has been substantially boosted by fossil fuel input, we have put ourselves into a vulnerable position. What happens when fossil fuels begin to give out on us?

It’s been a while since I did any, you know, math for this blog, as I seem to be living my own worst nightmare and turning into an armchair philosopher (oh the shame). In this post, I return to something closer to math. It’s illustrative rather than quantitative, but helps frame the peril we have put ourselves into in a low-effort sort of way.

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A Random Fix to Polarization

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From the New York Times; 2022-11-13

Following the midterm elections in the U.S. this week, the punditry is ablaze with stories about how voters have rejected the lies, spoken out about abortion, indicated that this inflation spike is not a primary concern, and that perhaps we are finally shaking off this fever-dream and turning a corner.

Really? By what margin? The mere fact that the balance of power has taken so long to determine (still not settled in the House, as of this writing) indicates to me that we are not collectively on the same page about these issues. The main story, to me, is that the deep polarization pattern continues to stymie our political system.

I have an idea that could make a huge difference. It’s an idea that has essentially no hope of gaining traction—especially since: who the hell am I? But I will put it out there all the same. Maybe others will see the logic.

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The Cult of Civilization

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From Pixabay/KELLEPICS

I recently watched a Netflix documentary series about fundamentalist Mormons, exposing along the way a number of beliefs that seem bizarre from the outside, but that are accepted as perfectly normal within their insular community. Though the term “cult” is not used in the series, it is hard not to see the sect in this light. It would be nearly impossible to convince any one of its members that they are deeply in error, in part because doing so threatens the salvation that has been dangled in front of them.  If they are pure enough in their faith, resisting external evils that try to knock them off the one true course, eternity is theirs. In today’s world, one need not look far to find other groups whose beliefs are at once bonkers and seemingly immune to attack.

Hearing the perspectives of ex-members of these cults never fails to be fascinating, providing a window into how they could have swallowed all the lies and goofy stories. Also important to know: it is possible to escape, and to suddenly see the magnitude of the deception. Once out, there’s no going back.

Cult beliefs look insane from the outside, so why don’t its adherents detect the lunacy? Why is it so hard to convince them of their folly? One possible answer—as a tangent—is that cults offer a deeply satisfying sense of identity, belonging, and (seemingly) unconditional acceptance/support within its community that we have otherwise lost in today’s society, but that in times past were central offerings of tribal life to which humans are intimately adapted. It is remarkable how quickly tribal cohesion instincts of mutual help resurface as soon as core elements of civilization (provision of food, water, electricity, for instance) fail in a natural disaster. We’ve still got it, underneath the veneer.

Leaving that for another time, let me now condemn myself in the court of civil opinion by making the charge that most people on Earth are members of a dangerous cult whose central beliefs seem every bit as bizarre to one who has escaped the thought prison, but that are seldom questioned and even fiercely defended. This post offers ten heretical statements that seem obvious to me, but tend to produce emotionally charged reactions by members of the cult of civilization. Watch yourself, now. Continue reading →

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A Climate Love Story

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From Pixabay (Kranic17/535 images)

The year is 2050. Things are unimaginably better than anyone in 2022 might have predicted. Such turnarounds are not without precedent. After all, the boom time in the 1950s came on the heels of the Great Depression and a crippling world war against ominously dark forces.  From the depths of those hard years, it would have been hard to foresee the glory days around the bend.

In our imagined 2050, climate change has been tamed by a spectacular suite of technological feats: fossil fuels are all but obsolete except in a few backwater places, replaced by an impressive profusion of solar panels, wind turbines, hydroelectric dams, thorium reactors, deep geothermal installations, and a nascent fusion industry on the verge of commercialization. Electric transport handles most domestic needs, while a bounty of biofuels powers air travel and long-haul shipping.

Breakthroughs in battery technology have resulted in large banks of lithium storage everywhere you look to smooth out the irregularities in renewable production. Seasonal-scale storage is around the corner, so that even places like Alaska will be able to satisfy demand year-round based on a massive energy haul from long summer days.

Freed from the constraints of obtaining energy from petro-states, countries are able to source all of their energy needs within their borders and in fact have more available energy than they did when dependent on primitive fossil fuels. Economies are thriving: global trade is more vigorous than it has ever been because energy is cheap and abundant.

Continued revolutions in computing power and device technology has us swimming in cool gadgets—putting something akin to Star Trek tri-corders in our hands, in contrast to the smart phones we fawn over today (mere walkie-talkies by comparison).

Abundant energy has transformed energy-intensive practices of food production and mining, so that everyone’s dietary and material needs are met, finally ameliorating hunger and gross inequity globally. Based on rising standards of living, birth rates are predicted to stabilize by century’s end so that we are on track to cruise toward a stable, peaceful, sated global regime.

In short, we’re total rock stars for having achieved a whole new phase of prosperity and amazingness. Martian colonies? Why not? While we’re fantasizing, let’s throw those in too! So yes, we are on our way to exporting our conquest to the stars and all is as it should be.

Part of me feels really crummy doing this to you. My motivation is not to be mean, really. Rather, I think it is incredibly important that we approach our future prospects realistically and understand fundamental planetary limits. So I’m afraid this is where I pull the rug out from under you. But see, I’m warning you and apologizing in advance rather than gleefully anticipating your bruising fall. Feel free to step off the fantasy on your own, if you have not already done so. Three. Two. One.

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