Phil • Cr. Think • Science • Hist •

The Philosophy Website

Wisdom Builder

Three Tidbit Stories

Evolution.

3 random tidbit stories in about 3 minutes.

1.

Evolution FAQ.

First, the direct answer: because air pressure is so low and gravity so weak on Mars, it’s a challenge but doable. We need to remove toxins from the air and increase the percent of oxygen. While Earth has a solid 21% oxygen, on Mars we’ll likely need a higher percent of oxygen due to the thinner air. So, the minimum needed is likely more than 21%, perhaps around 35%. To add atmosphere to Mars, there are two ways: we can add it externally or release it from Mars itself. The easiest way might be with plants that convert external Sun energy.

On Earth, we have 21% oxygen and 78% nitrogen, with a psi ranging from 14.7 at sea level to 7.93 at La Rinconada. People can acclimatize to these extremes well. On Mars, the air pressure on the ground is only 0.085 psi, which is 173 times thinner, and 95% carbon dioxide, which is toxic to us. The oxygen level is only 0.13%. The first step is to unlock the oxygen from the CO2, which both removes toxic carbon dioxide and increases oxygen. However, the biggest problem is the atmospheric pressure.

The gravity on Mars is only 38% that of Earth, meaning gases escape more easily. This means we’ll need to add an ozone layer and a magnetic field.

When we add atmosphere, we have to strive for above 21% oxygen with carbon dioxide levels below 1%. Over time, the Martian air might end up being something like 33% oxygen, 50% nitrogen, and 17% argon, giving it a slightly metallic scent. It might become common to say things like, “You like the smell of Earth, but I actually prefer Martian air.”

 

 


I wrote that Evolution FAQ, 

and posted it to TST 2 years ago.

2.

Evolution Quote.

Here is the full Holmes quote from 1858:

“We are all tattooed in our cradles with the beliefs of our tribe; the record may seem superficial, but it is indelible.”

Holmes raises an important point about the origins of our personalities, reminding us that initially we are formed by those raising us in a particular setting at a particular time. This quote is used in chapter 7 of 30 Philosophers to explore our worldview and identity. Chapter 7 invites readers to reflect on their inherited beliefs and consider how understanding their roots can lead to a more authentic and examined life. After all, growth begins when we move beyond the “indelible” tattoos of our tribe to embrace a broader understanding of ourselves and the world.

Your worldview is your outward lens on the world. Your identity is how you see yourself within that world.

Oliver Wendell Holmes, Sr. spent much of his time pondering the profound truth that from the moment we are born, we are imprinted with the cultural norms, beliefs, and values of the society around us. These “tattoos” shape us, influencing how we see the world and our place within it. While these beliefs may appear superficial—mere traditions or assumptions—they often lie deeply rooted in our subconscious, quietly steering our actions and decisions.

Your initial worldview and identity is imprinted upon you starting at birth, but it is not your destiny.

Your starting foundation becomes the lens through which you interpret life, and it requires deliberate effort to critically evaluate and potentially reshape.

 


I wrote that Evolution Quote, 

and posted it to TST 2 years ago.

3.

Evolution FAQ.

No. But pre-counting? Yes. And that’s surprisingly interesting — a clue to how evolution might sometimes lead toward cognition and, eventually, brains.

Let’s explore.

In my writing, I often use a simple image: two rocks next to two shells on a beach. Long before humans existed, those rocks and shells already stood in numerical equality. We didn’t invent that relation. We eventually noticed it, named it, symbolized it — but the structure itself was there.

Keep that in mind as we turn to the Venus flytrap.

In 30 Philosophers, I used what the flytrap does to explore the schema of eating. Is what it does the same as what we do? Should it carry the same label?

The flytrap captures prey, digests it, and absorbs nutrients. Biologically, that qualifies as feeding. But there’s no hunger, no awareness, no inner experience. It performs the function without the feeling. So perhaps it is a kind of pre-sentient eating — structurally similar, experientially absent.

The same question applies to movement. In general, animals move and plants don’t. Yet the so-called walking tree slowly shifts position through directional root growth. The Venus flytrap snaps shut through rapid hydraulic changes in its leaf cells. These are movements — just not locomotive movement directed by a nervous system. Again, we might call them pre-animal forms of movement.

Now consider counting.

A Venus flytrap usually requires two touches within about twenty seconds to trigger closure. After it closes, additional internal touches increase digestive enzyme production. Around five or so stimulations and digestion ramps up fully.

Is it counting to 20 while also counting to 2? Is it then counting to 5? No. There are no numbers involved.

What’s happening is electrical signal accumulation. Each touch generates an action potential. When enough signals accumulate within a short time window, a biochemical threshold is crossed and the trap responds.

But look at the structure:

It distinguishes one touch from two.
It distinguishes two from several.
It distinguishes “not enough” from “enough.”

That isn’t symbolic counting. But it is pre-counting — the tracking of discrete events over time with different outcomes based on quantity.

And now return to the rocks and shells.

Two rocks equaling two shells didn’t begin when humans arrived. That quantitative relation existed long before language, long before symbols, long before brains capable of arithmetic.

Humans invented mathematical notation.

But quantity, equality, thresholds — these are woven into nature.

The Venus flytrap doesn’t know what “two” means.

Yet nature already distinguishes between one and two.

And that suggests something profound: cognition, and even mathematics, may not appear out of nowhere. They may emerge gradually from pre-sentient structures already present in the fabric of life itself.

 


I wrote that Evolution FAQ, 

and posted it to TST 6 months ago.

The end. Refresh for another set.

Scroll to Top