Mother Trees that Care For their Children Trees

What I'm currently reading: Finding the Mother Tree, by Suzanne Simard (2021). Simard makes a stunning claim. Here's an excerpt from her introduction:

My queries started from a place of solemn concern for the future of our forests but grew into an intense curiosity, one clue leading to another, about how the forest was more than just a collection of trees.

In this search for the truth, the trees have shown me their perceptiveness and responsiveness, connections and conversations. What started as a legacy, and then a place of childhood home, solace, and adventure in western Canada, has grown into a fuller understanding of the intelligence of the forest and, further, an exploration of how we can regain our respect for this wisdom and heal our relationship with nature.

One of the first clues came while I was tapping into the messages that the trees were relaying back and forth through a cryptic underground fungal network. When I followed the clandestine path of the conversations, I learned that this network is pervasive through the entire forest floor, connecting all the trees in a constellation of tree hubs and fungal links. A crude map revealed, stunningly, that the biggest, oldest timbers are the sources of fungal connections to regenerating seedlings. Not only that, they connect to all neighbors, young and old, serving as the linchpins for a jungle of threads and synapses and nodes. I’ll take you through the journey that revealed the most shocking aspect of this pattern—that it has similarities with our own human brains. In it, the old and young are perceiving, communicating, and responding to one another by emitting chemical signals. Chemicals identical to our own neurotransmitters. Signals created by ions cascading acrossfungal membranes.

The older trees are able to discern which seedlings are their own kin.The old trees nurture the young ones and provide them food and water just as we do with our own children. It is enough to make one pause, take a deep breath, and contemplate the social nature of the forest and how this is critical for evolution. The fungal network appears to wire the trees for fitness. And more. These old trees are mothering their children.

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Facts as Hate Speech

Colin Wright is a biologist who often writes about sex and gender. He often pisses off people by claiming that there are only two sexes (and see here). But now, according to Instagram, he has also engaged in "hate speech." Here is his Tweet where he explains what happened at Instagram:

You can read the entire thread here.

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Response to “I Can’t Lose Weight Because of my Metabolism

How often do you hear this excuse for obesity: [Person] cannot lose weight, no matter how little they eat, because of their low metabolism." Well . . . bullshit. Here's a few excerpts from a NYT article titled "What We Think We Know About Metabolism May Be Wrong: A new study challenges assumptions about energy expenditure by people, including the idea that metabolism slows at middle age."

Everyone knows conventional wisdom about metabolism: People put pounds on year after year from their 20s onward because their metabolisms slow down, especially around middle age. Women have slower metabolisms than men. That’s why they have a harder time controlling their weight. Menopause only makes things worse, slowing women’s metabolisms even more. All wrong, according to a paper published Thursday in Science.

Dr. Klein said that although people gain on average more than a pound and a half a year during adulthood, they can no longer attribute it to slowing metabolisms.

When it comes to weight gain, he says, the issue is the same as it has always been: People are eating more calories than they are burning..

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Daily Aphorism #4: Homage to a Three-Pound Organ

The more I learn about the brain, the more I am amazed and confounded. It doesn't seem possible that brains should work nearly as well as they do. Let me rephrase . . . it doesn't seem possible that brains should work at all. For starters, what's with consciousness? Yes, we are exquisite survival machines, but that doesn't necessarily mean that we should expect to have a front seat to the show, the sounds and lights and smells and touches associated with surviving. But we are plopped into front row seats and it's glorious and terrifying to be a conscious witness to our day-to-day adventures. This makes no sense to me. It seems that we could be exquisite survival machine yet not be conscious of anything. What is the value-added of being conscious witnesses? I'm not a believer in "free will," so I'm not convinced that it is necessary to have a conscious commander of my body. On the other hand, I can't believe that natural selection threw in would would seem to be an expensive add-on like consciousness just for the entertainment value.

All of the above is a mere warm-up to another miracle performed by brains. Today I was looking for a tiny bluetooth speaker, but could not find it. I decided to walk down to work in my basement on an entirely unrelated project, but my mind returned to the search for the bluetooth speaker. While standing in my basement, my three-pound brain retraced my steps over the past week, ruling out certain locations any playing little "videos" convincing me that the speaker was not somewhere other than my house. Then while my eyes were wide open, my mind generated imagery of me placing that little speaker next to a guitar case in my bedroom (two floors up). This imagery was vivid and convincing. I was now certain of where the speaker was, even though I wasn't yet looking at the speaker. I walked upstairs and found it exactly where my brain said it would be. My three-pound brain created an accurate model of my house and replayed my activities over the past week. It did this quickly and effortlessly, generating "videos" and a rationale for why I put the speaker where I did. Billions and billions of microscopic neurons doing something that seems impossible, even after I saw that it could actually happen. My brain did it without any programming by any sentient being. I has no central processing unit and no traditional software. As best we know, this set of miracles occurs as the result of this Hebbian insight: Nerves that fire together wire together.

My difficulties understand the magnificence of the brain reminds me of the story of the engineers who, studying the anatomy and physiology of a bumblebee, concluded that it would be impossible for such a creature to fly.

And now that same brain that found my lost object harnesses the intricacies of the English language, allowing me to share this story about how two ways in which ordinary brains are beyond-belief extraordinary. The only reason we aren't repeatedly stunned and disoriented by the amazing things are brains can do is because we have gotten used to such miracles, day after day after day.

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