Bart Blast’s ElixirConf EU 2026 talk. A year of Hologram in review, then a deep dive into local-first Elixir in the browser - what the term means, why CRDTs guarantee convergence but not invariants, and the structural advantages Elixir has for building a sync layer that JS-first stacks can’t copy. https://www.youtube.com/watch?v=qqpNovT7cys