Saturday, January 15, 2022

IBM Developer and Call For Code

It was a delight to work on designing last year's Call For Code challenge with IBM Developer, and then to participate in judging the entries. But I think the best part was joining my team in NYC to watch the university awards!

Our students Onajite Taire and Gedion Alemayehu impressed us--and others, plainly--with their Mile 12 app. 

And of course it was wonderful that my university, my colleagues, and I received some recognition for our contributions as well.

Dr. Matthew Willard gives his time generously to Augustana students and to students around the world. The two of us love seeing students try new things that aim at the common good.

Tuesday, April 6, 2021

IBM's Call for Code 2021

IBM just released their latest "Call for Code." If you have a team with some coding skills and you want to put them to use helping others to tackle some intractable problems, click that link and dive in!

I have a particular passion for clean water, but each one of the problems they're inviting people to work on are worthy of our time and attention.

Wednesday, January 6, 2021

Peirce, Religion, and Communities of Inquiry: Jeffrey Howard interviews me for his latest podcast

Recently I had the pleasure of talking with Jeffey Howard on his Damn The Absolute! podcast. We mostly talked about Charles Sanders Peirce, pragmatism (or "pragmaticism" as Peirce called it), religion, and communities of inquiry. 

You can listen to our conversation here.



Catch Your Breath: A Winter Meditation on Trout - My latest article, in Hothouse

My latest publication, a winter meditation on the beauty of brook trout, in Hothouse // Solutions. This is my first publication in collaboration with my son, Michael O'Hara, my favorite pro photographer.

A little taste of my article:

 The trout is, for me, an icon of what I hasten to ignore.

I hope you enjoy this short read. Consider subscribing to Hothouse. 

We can all use good news, after all. I like the short format and the focus on solutions, not just on problems.

Of course, if you like what I've written here, you might also like my book on brook trout.

Tuesday, December 15, 2020

My Father's Stories


Dear Dad,


We recently had a conversation about what kind of wisdom comes with age. We’ve both known some old people who seem unwise, and some young ones who are ahead of the game. And I think you and I (both of us now being over the trusted age of thirty) have occasionally been unwise in our post-adolescent days. Oh, well.


While I’ve known a few foolish geezers, over the years my respect for a certain kind of wisdom I see in you has continued to grow: your stories. Again and again when I have faced uncertainties in my life, I have returned to your stories.


Your stories aren’t doctrines, because that’s not what stories are. So I’m not saying they’re right or wrong. What matters is that they’re yours, and when you tell stories about your own life, they’re some of the truest stories I can imagine. You only mess them up when you try to explain them. That’s best left for Aesop. Your stories are more like compressed data. They do more work than any quantum computer I’ve heard of can do, and they are like a vein of gold that keeps growing and branching the more I dig into it. They explain themselves, and they are resilient.


Some of your stories are entertaining. My kids have heard stories of your experience in the National Guard so many times they probably not only think that I was there with you in that tank, they probably can imagine themselves in there, firing at trees hundreds of yards away in target practice.


But your stories do much more than entertain. They teach. When I think of you riding in the back seat of the car while your parents heard the news of the bombing of Pearl Harbor and you wouldn’t shut up, I feel like I am present there, and I feel like I am learning about my family, and what it means to be a family. You’ve never told me what Gram did when you were making too much noise, but that doesn’t stop me from remembering what I know of her, and imagining her response. And you haven’t mentioned your brother in that story either, but I can imagine him learning a lesson as well when Gramps turned around and smacked you to get you to shut up while he contemplated what was about to become of his military service, and of his wife and sons, and his widowed mother and his younger siblings. Just reflecting on that makes me think more seriously about my own obligations to others. It’s a tightly-packed story that is full of webs of relationships, and I am grateful for every time you’ve told me.


The same goes for all the stories you’ve told me about your life during the war, and afterwards. The way Gramps prepared you all for the trip back home while he prepared himself and his men for war. The way Uncle Charlie taught you to use the tools he knew. You’ve told me about Uncle Charlie so many times I wish I knew him myself. In fact, I think I do, through you.


Because, after all, your stories are also like tools. I think about the stories you’ve told me about how to take an engine apart so that you can put it back together again. I remembered that when I took apart my lawn mower engine once, and I thought about it the other day when I took apart the vacuum cleaner to figure out why it wasn’t working. I took out the parts methodically, and laid them out in order of removal, so that I could put them together again. You taught me about algorithms when I was a kid, sketching some out on napkins at the pizzeria in Woodstock, but also teaching me the word “algorithm” and then telling me stories that illustrated algorithms. You were making me a philosophy professor whether you knew it or not. Not bad for an electrical engineer!


A few years ago my youngest brought his friend over to our house. Her car door wasn’t working right. He told her to park it in the driveway and said that his dad could fix it. Somehow he knew that I wasn’t afraid to take things apart and tinker with them. He also knows that I still own and use tools you gave me when I was a boy. As we took apart that car door there in our driveway, Matt watched and learned. Not long afterwards, when he wanted to fix something on his own car—something he had never done before—he asked to borrow my tools, and got to work. He was unafraid to use tools, and unafraid to try something new. You know why? Because he saw it in me. And you know what he saw in me? He saw you. Your stories—the ones you told and the ones you showed me—those live in me all the time. Not surprisingly, he's now certified as an automotive electrician, and working as an auto mechanic. And he's good at his job. That's a picture of your stories, living in your grandson. I hope you're as proud of him as I am.


I think one of the things I have learned from your stories is a willingness to try to work with my hands to make good things. I’ve made a lot of the furniture in our house, and as you know, I’ve worked with stone and bricks and mortar on three different continents now. When I lay stone, I am always thinking about the structure in front of me, thinking about stresses and balance, physics and aesthetics. Despite a lack of formal training in engineering, standing beside you while you built a pier on the reservoir, or while you explained the bridge you built across the creek behind your house, gave me both the gumption to try building things myself, and a sense of what would work and what wouldn’t. Of course, that bridge also came with a lesson in law (which is why you couldn’t modify the banks) and a lesson in measuring the rate of flow of a river (something I had no idea how to do until you told me that day.) I can’t look at bridges and cantilevered and suspended structures without thinking of the engineering lessons you taught me through your stories.


The same is true for my adeptness with languages, and for my ability with music. Yeah, some of that is probably genetic (from you, again) but a lot of it is just learned fearlessness. I have never seen you turn away from a musical instrument just because you hadn’t yet received lessons in it. And I’ve seen you play in public many times, and your stories—I want to emphasize this—your stories of messing up have been a huge gift. “Don’t stop, just keep playing!” This is one of the things I tell my students now about public speaking, and about writing essays. “Always have a song you’re ready to play.” Years ago when I was having dinner at the home of the Lutheran Bishop of Nicaragua, someone handed me a guitar and said “Play us a song.” This was a complete surprise to me, but thanks to your stories, I was ready, and I led the whole group in several songs.


If I tried to write down all the stories you’ve told me, it would take a long time. I hope you continue to write down the stories you know. And I hope you tell them simply, unadorned, without feeling like they need to be dressed up. Just pick up that guitar and sing them, Dad. You have such a good voice, such a gift for music. You’re our family’s Homer, our Vergil.


In the same vein, if I tried to write down all the ways you show up in my classes, or in the ways I raised my kids, I doubt I’d be able to get it all down, but I hope this little letter at least gives you an idea of that. Those napkins you scribbled on at the pizzeria helped my kids do better in math and science. The times you told me about meeting someone who spoke another language and you tried speaking to them have indirectly emboldened your grandkids to study and work abroad in Asia, Africa, Latin America, and Europe. You taught me my first lessons in logic, and I taught them to my kids, and then your granddaughter grew up to be a far better reasoner than either one of us. Hopefully you and I will get a little credit for that when her biography is written—a little, but not too much. She deserves most of the credit for taking the stories we passed on, unpacking them, and then retelling them in her own way. And I love to watch her do that.


Speaking of languages, your stories have taught me in some other ways, too. Well before I could read Chomsky you mentioned him to me. I don’t remember what you said, but I remember the way you said it. It was like when you mentioned Feynman, Bernoulli, Les Paul, Vivaldi, Buckminster Fuller, Linus Pauling, or one of the other creative thinkers you were the first person to teach me about. Years later, when I was teaching at Penn State, one of my students mentioned Chomsky, and said wistfully that she wished she could have the chance to meet him. I asked her “Have you tried writing to him or giving him a call?” “I can do that?” “Why not?” I was passing along to her some of your willingness to try. After she went home to Boston for semester break she came to visit me in my office, and told me that she had called him and he invited her over to his campus. They talked for an hour over coffee. She was thrilled! That’s a win in your column, Dad. Well done.


When I was a boy you also bought me a subscription to Scientific American, and a copy of Van Nostrand’s Scientific Encyclopedia. I wish I still had that Van Nostrand’s. It’s horribly out of date, but I spent many hours paging through it, and it was a gift of love. People don’t often think of science as stories, but what else are scientific papers? They’re letters written to strangers, telling stories as clearly and as straightforwardly as they can. I remember reading about the work of Benoit Mandelbrot in Scientific American, and I have not stopped learning from that story ever since. If I had a list of how many times I’ve taught principles I learned from those articles, it would be a very long list. Another win in your column, I think.


I could go on for a long time, but I have more work to do today, so I’ll end here. I just wanted to say, in the form of a letter about stories, that I love you. Thanks for telling your stories, Dad. I keep telling them all the time.


With love,




I write about my father in several places, including in my book Downstream. If you want to see some more of what I've written about him on this blog, click the "my Dad" link, below.


Saturday, November 21, 2020

Of Fish and Forests

When people ask me what I do I sometimes reply “I study the relationships between fish and forests.”

A more precise way to describe my job might be to say I’m a teacher, a scholar, and a department chair and program director at my university. But that answer is pretty dry and uninteresting.

Adding detail doesn’t always help, though I could say that I teach philosophy, classics, religious studies, theology, field ecology, study abroad, environmental studies, and sustainability; and that I take my students to the places I study: rainforests in the tropics and in Alaska, deserts, and the Mediterranean.

So instead I say “fish and forests.” The words are simple and easy to understand. I hope they invite more questions, and often they do.

Salmon bones on woody plants beside a river near Lake Clark, Alaska. A bear left these bones after a meal.

The question I hope for is some version of “what do fish have to do with forests?” The short version is: nearly everything.

Nearly as good as that question is when someone points out that fish don’t live in trees. Short version of my reply: that’s not exactly true, and many of my students can tell you the various ways fish do live in trees. Here are a few:

Around the world, the edges between land and water are held together by roots, and in those places, fish find food, shelter, and places to spawn.

A great example of this is mangroves, which are some of the most important ocean nurseries. Thousands of species bear their young and lay their eggs in mangroves. The mangroves provide shelter from predators; they stabilize the soil, protecting land from hurricanes and strong waves, and protecting the sea from too much runoff. Birds, mammals, insects, and reptiles live in the branches. Fish and myriad aquatic invertebrates live among the roots.

Image copyright 2020 David L. O'Hara
A mangrove on an island off the coast of Belize.


We could add that there are “forests” of kelp and coral underwater, too.

Wherever birds eat fish, those birds also build the soil when they return to the land. Their waste becomes fertilizer for all manner of grasses, forbs, and trees. Visit the rivers of Alaska and you will find shrubs and trees growing on the banks, where seeds found fertile gardens in mounds of bear poop.

When a bear eats salmon and berries, the berry seeds pass through the bear undigested. The bear deposits the seeds in a steaming pile of fecundity. Bears are forest gardeners.

Here in the middle, between the tropics and the Arctic, the Big Sioux River is entering its quiet winter’s rest. We haven’t had much rain, and the river is ankle-deep in many places. The fish gather in deep holes that were sculpted out by fallen trees. When the river claims a tree, that tree doesn’t simply float away. It becomes food for beavers and decomposing insects. It creates eddies that dig deep holes on one side and deposit sediment on the other. Sometimes the tree becomes a new island, and new trees grow up on its rotting wood and on the debris it collects. Raccoons grab mussels and crayfish, and eat them in the branches. Mink and otters dine from a similar menu further down on the bank.

Image copyright 2020 David L. O'Hara
Tree growing on an island in the Big Sioux River. The tree makes habitat for both terrestrial and aquatic life.

Image copyright 2020 David L. O'Hara
Near the roots, a deep hole has been carved out. Habitat for fish, hunting grounds for raccoons and other mammals.

Image copyright 2020 David L. O'Hara
A fallen tree has created an island in the Big Sioux River

Everywhere I go with my students I ask them to pay attention to the water. The fish and the forests alike need it. The forests keep the water cool and clean, and the fish fertilize the trees. Often, when I am teaching in Morocco or Spain or Greece, I ask them to notice the architecture of water, and the way it relates to our values. Religions have rituals of ablution, and ancient temples collect water from their rooftops, letting it flow down ancient marble columns that imitate the tree trunks that once made porticoes, to flow into cisterns. The narrative of the Christian scriptures begins in a forested garden, and ends in a city with a river flowing through it.

My students smile and roll their eyes at hearing me repeat the same question yet again. What do fish have to do with forests? What does water have to do with dry ground?


Image copyright 2020 David L. O'Hara
Traditional Itzá canoes on the shore of Lake Petén Itzá.

And then one will point out a young mangrove shoot, a migrating salmon, a traditional Itzá canoe on a lakeshore, a baptismal font, a hammam, a public fountain, a Roman aqueduct.

And we will all stop for a moment and consider the way that this water, right here, flows through every part of our lives.

Saturday, September 19, 2020

One Word

One Word

One word to the finches

Who perch on my towering sunflowers,

Who fling golden petals, 

Who drop a thousand husks

On the garden below.

Who dive at my coneflowers, talons out

And then peck and pull and shred

Those spiny, spiraled heads.

It is September now, but I know

That you and others of your kind

Will be back again, and again

Perching in the branches

All fall, and all winter too.

And you will continue to feast

On the dry seeds that remain.

What was a colorful garden is becoming

Your harvest meal, your stores for winter,

And you don't care how much I worked

To make this garden grow.

The earth I turned, the soil I amended,

The compost churned, the toil.

The seeds I raised inside while you sat

On brown stems, looking in my windows.

The seedlings planted, and watered,

And watched until they grew.

I have just one word for you:


When you leave today I'll gather 

A few of those seeds myself

And I'll set them aside to dry

So that next spring you, and I

Can begin to grow again.


David L. O'Hara

19 September 2020

Monday, September 14, 2020

On Teaching Outdoors

This summer Jen Rose Smith interviewed me for a piece she was writing for CNN on outdoor classrooms as a safer alternative during the COVID-19 pandemic. That piece was published here.

During the interview, we talked about the outdoor classroom my students and I built at Augustana University. 


When she asked me if there were precedents to teaching outdoors as I am wont to do, I mentioned several, from Aristotle's "peripatetic" instruction to the contemporary Norwegian idea of "friluftsliv."