Here are our favorite Hacker News comments from June and July.

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HN submission overlaps with commenter’s PhD thesis on sketching sound and music.

An article about the history of UUIDs gets details filled in by commenters.

A user’s story of searching for unused area codes.

A neurologist replies to an article about scientists reversing brain damage.

A user describes attending a small primary school class with a gifted mathematician.

A doctor replies to an article on EHRs hurting relationships with patients.

Reminiscences of Pascal at Apple in the 80s and its influence on the designer of the D language.