Exact Instructions Challenge PB&J Classroom Friendly | Josh Darnit
What it is
A family comedy video in which kids write instructions for making a peanut butter and jelly sandwich, and a parent follows them with exact literalness, producing chaos. This is the classroom-friendly version.
Why Hacker News recommends it
HN uses it as shorthand for how hard it is to write unambiguous instructions, in discussions of programming, tutorials and LLM prompting.
- 1 people recommended it
- 1 different months
- 0 strong recommendations
- first 2022, last 2026
What HN commenters said
“a famous YouTube video[0] about how to write instructions that can be followed”
Famous video on writing instructions that can be followed
t-writescode, 2026-03 · Recommendation · in “Can You Instruct a Robot to Make a PBJ Sandwich?”
Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.
Topics: exact instructions, pb&j, programming analogy, ambiguity, comedy
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