Obsidian' has a few different meanings depending on the context, but if we're talking about the note-taking app, it doesn't have a single author in the traditional sense—it's developed by a team. However, the project was co-founded by Erica Xu and Shida Li, who played huge roles in shaping its vision. I love how Obsidian blends Markdown simplicity with powerful linking features—it feels like a digital brain for creators.
If you meant the book 'Obsidian,' by Sarah J. Daley, that's a dark fantasy novel with a volcanic magic system. Daley's worldbuilding is intense, almost like 'Avatar: The Last Airbender' meets 'The Fifth Season.' I stumbled upon it last year, and the protagonist's struggle with destructive power really stuck with me. Either way, Obsidian-themed stuff tends to have this raw, unfiltered energy that I vibe with.