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Why ChatGPT Can't Draw a Full Glass of Wine

Alex O'Connor · explainer · Watch on YouTube

LLMs & generative AIPhilosophy & ethics

What it is

Alex O'Connor shows that ChatGPT cannot draw a wine glass filled to the brim, and ties the failure to David Hume's missing shade of blue. It asks what the failure says about how image models learn.

Why Hacker News recommends it

HN treats it as the origin of the full-wine-glass meme and an illustration of how models lack concepts missing from their training data.

  • 2 people recommended it
  • 2 different months
  • 0 strong recommendations
  • first 2025, last 2025

What HN commenters said

  1. “There is also a great video by Alex O'Connor on a simple prompt to generate a full glass of wine, which illustrates this really well”

    Shows ChatGPT failing to draw a full wine glass, illustrating AI limits.

    proc0, 2025-02 · Recommendation · in “AI Is Already Obsolete – The Open Challenge No One Will Answer”

  2. “illustrates it pretty well”

    Illustrates that models lack world models for concepts missing from training data.

    jimbo808, 2025-09 · Recommendation · in “Getting AI to work in complex codebases”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: chatgpt, image generation, wine glass, training data, david hume

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