Wisdom Builder

Three Tidbit Stories

Topic:

Critical Thinking

Process and clarity.

MODE:

Speed: 1.00

Critical Thinking.

3 random tidbit stories in about 3 minutes.

Idea 1.

A Critical Thinking Story.

Stegosaurus.

Lived 152 to 145 million years ago.

Stegosaurus is the classic plated dinosaur most people picture: large back plates, a small head, and a spiked tail used for defense. It lived late in the Jurassic, especially in what is now the western United States, and is best known from the Morrison Formation. This is the famous, fully recognizable stegosaur of popular imagination — the polished, later form of a branch that had already been evolving for quite some time.

We’re pretty sure Stegosaurus plates stood upright; the real debate now is their exact arrangement, not whether they lay flat.

The last stegosaurs went extinct in the Early Cretaceous, likely around 130 million years ago, probably due to gradual ecological change rather than a single extinction event.

I wrote that Critical Thinking Story,

and posted it to TST 8 months ago.

Idea 2.

A Critical Thinking Vocabulary.

Non-Self.

Self and non-self is the exploration of your life essence: what it means to exist in the material world, and whether anything about you existed before birth or continues after death.

Non-Self begins as a Buddhist insight: the self we cling to is not a fixed, permanent thing. What we call “me” is changing all the time. Body changes. Emotions change. Memories shift. Desires rise and fall. Identity is not a statue inside you. It is more like a flame, a river, or a process.

TST accepts that process insight, but grounds what we can examine in the material world. Your body is not created from nothing, and physically, it does not return to nothing. It is made of matter and energy already in the universe. For a while, that matter and energy form a living pattern: you. Later, the pattern dissolves, and the matter and energy continue. Whether anything beyond that material pattern exists remains a personal metaphysical question, held with humility.

This does not make life meaningless. It makes life astonishing. You are a temporary configuration of the universe able to experience, remember, love, suffer, choose, and reflect. The self is real as a pattern, but not as an isolated eternal object sealed off from everything else.

In that sense, Non-Self connects Buddhism, Spinoza-like monism, and modern physics. There is no little permanent “thing” we can point to inside the body as the self. There is the universe, continually reconfiguring. For a time, one of those configurations says, “I am.”

I wrote that Critical Thinking Vocabulary,

and posted it to TST 5 months ago.

Idea 3.

A Critical Thinking Story.

Blue-Green Bacteria (Not Algae).

2.65 Billion years ago (+/- 50 million years)

Blue-green algae are not true algae at all. They are cyanobacteria — ancient, photosynthetic bacteria. Because they use sunlight and often look algae-like in ponds, lakes, and wet places, the old label stuck. You still see it today on pool supplies and warning signs, even though the scientific term is cyanobacteria. They are not plants, and they are not true algae. They are bacteria.

These tiny organisms were world-changers. Over immense stretches of time, they helped drive the oxygenation of Earth, slowly transforming the oceans and atmosphere. The Great Oxidation Event is usually dated to about 2.4 billion years ago, but cyanobacteria likely appeared earlier. In that sense, they were not just another bacteria. They were among Earth’s earliest great planetary engineers.

They also matter for another reason. Much later, the ancestors of chloroplasts — the structures plants and algae use for photosynthesis — likely came from cyanobacteria through endosymbiosis. So even though blue-green algae are not true algae, they helped make later algae and plants possible. That gives them an even bigger place in the story of life.