🧒 Explain like I'm 5
Imagine you have a big book with lots of pages, but you only want to read the pages that are interesting to you. A smart way to do this is to only open the pages you need and keep track of where you are in the book. This is like building a news feed on the web, where you only load and show the parts people want to see.
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Senior-level deep dive: internals, pitfalls, and a self-interview ladder.
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