Technically it is true that it is a markup language but it is missing the essence of what makes Org-mode great. It is like saying that Stephen King is literate—

Technically it is true that it is a markup language but it is missing the essence of what makes Org-mode great. It is like saying that Stephen King is literate—it is true it is even indispensable for his work but it should not be the first thing we mention about him. Org mode is the bicycle for your mind/the second brain/the whole life in a plain text.