BrowseStories

The stories from the TST Timelines.

First Animal Teeth

Teeth first evolved in a common fish ancestor to reptiles, dinosaurs, and mammals. Dinosaurs and mammals inherited the same basic teeth but shaped them in different ways for different lives.

Thu 1 Oct 2026

P. 2 days ago

U. 2 days ago

Hume’s Is–Ought Problem

Good thinking separates facts from values. When an argument moves from what is true to what we ought to do, look for the hidden value premise.

Tue 1 Sep 2026

P. 1 month ago

U. 1 month ago

The famous Lewis “Truth in Fiction” Paper

Fictional statements can be “true” inside an invented world, even when they are not true in actual history.

Wed 1 Jul 2026

P. 3 months ago

U. 3 months ago

R. G. Collingwood

Collingwood helped show that history is not just collecting facts. It is the disciplined reconstruction of past human thought and action from surviving evidence.

Sun 7 Jun 2026

P. 4 months ago

U. 4 months ago

Rudolf Steiner

Waldorf schools often use natural play spaces because Steiner’s education valued nature, sensory experience, imagination, and the development of the whole child.

Thu 4 Jun 2026

P. 4 months ago

U. 4 months ago

Last Non-Cynodont Therapsids

Dicynodonts were late-surviving non-cynodont therapsids: mammal-side animals, but not on the direct road to mammals.

Sat 23 May 2026

P. 4 months ago

U. 4 months ago

Last Non-Mammaliaform Cynodonts

Tritylodontids were not mammals, but they were late-surviving mammal-side cousins that carried many mammal-like traits without crossing into the mammaliaform line.

Sat 23 May 2026

P. 4 months ago

U. 4 months ago

First Therapsids

Therapsids mark the point where the mammal-side branch became more active, more specialized, and more clearly aimed toward the later mammal body plan.

Sat 23 May 2026

P. 4 months ago

U. 4 months ago