Many developers treat Git as a black box, relying on commands like `git add` and `git commit` without grasping what happens behind the scenes. This lack of understanding leads to frustration when things go wrong.

At its core, Git uses snapshots, not diffs, to track changes. Each commit captures the entire state of files at that moment. Identical files are stored only once, ensuring efficiency through SHA-1 hashes.

The hidden .git folder holds the entire repository database. Key components include `objects/` for file data, `refs/` for branch pointers, and `HEAD` for current branch tracking. Deleting this folder erases all version history.

Understanding Git’s internal objects—Blobs, Trees, and Commits—sheds light on how data flows from working directory to staging area and finally into committed history. This knowledge transforms Git from magic to mastery.