GitHub Made Crystal Clear · chapter 1: The GitHub moment
The split
2026-08-27
Figure 1.1 puts the two halves side by side. The left panel is everything that lives on your machine and needs nothing else. The right panel is everything that only exists because a company runs a service. The two arrows in the middle are the only places they touch.

This diagram is one of many in GitHub Made Crystal Clear.
Every chapter opens with the gist, draws the hard ideas, and ends with recipes and sources.
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