A Bruxelles abbiamo bellissime accademie musicali di quartiere. Per il corso di teoria musicale, propedeutico allo studio di uno strumento. Questa è l'accademia che frequento io:
The rough consensus on human development is that we became anatomically modern about 200,000 years ago, and that a significant change in our thought processes happened between ~100,000 and ~50,000 years ago. That so-called "cognitive revolution" included a lot of abstract thinking and forming theories about the world without direct evidence. I guess the relationship between how things happen on earth and how celestial bodies moved through the sky was an important subject of Neolithic thought.
"Bowl for Health", Treasure Island, San Francisco, CA, 2007.All the pixels, each in its own lane with a gutter on either side, at https://www.flickr.com/photos/mattblaze/2123765265#photography