Go may be easy to learn, but mastering it is a thing on its own, just like the other languages.
Go may be easy to learn, but mastering it is a thing on its own, just like the other languages.
If you really want an extreme example language with the tiniest spec, you can always take Brainfuck. The entire spec probably fits in a few paragraphs, but it's not easy to master.
The point about the spec was the language is small enough to master.
Scheme (Lisps in general) is different because it is homoionic. Forth is not mainstream, and neither is it's paradigm. And well, I never heard of Io so I will check it out, looks neat.
You can't just casually ignore inconvenient exceptions to your beliefs. I mean, you can, but it's not something that reflects positively.
A simple spec does not equate to a simple language. I would argue the opposite: a simple spec often means a large amount of hard work is punted on and left to the end-user.