Not exactly. Correct me if I'm wrong, but in MediaWiki (and others), you need to click the link, (optionally) type some text, and hit "Save" or the page doesn't actually exist yet.
With Roam, the page is automatically just there when it's mentioned. A subtle difference but I'm finding it quite useful.
With Roam, the page is automatically just there when it's mentioned. A subtle difference but I'm finding it quite useful.