Commit discipline in Gamsjaeger's process: every commit must be the smallest possible change that still forms an improvement — cannot be split further. Consequences: easier review, minimal impact on the running system, easy to revert, safe baseline after revert. Combined with the five Commit Transformations, the atomic principle constrains what a commit can be and makes priority ordering within a pull request meaningful. Fix-vs-remove and change-vs-add distinctions collapse without atomicity but become crisp under it: an ostensibly 'add' diff broken atomically usually decomposes into removes, fixes, refactors, and a smaller true addition.