"Smalltalk is a vision of the computer as its own, native medium. The whole system can be modified, by anyone. The dominant version is called Squeak (logo: cute mouse), and a modernized version is called Pharo (logo: lighthouse). Both are free and easy to download."
They even got a Squeak screenshot:
http://www.bloomberg.com/graphics/2015-paul-ford-what-is-codeExcellent essay all around!
- Bert -