Study Finds 65 of 1,270 Concepts Can Never Be Taught to LLMs via Language

A new paper by Spangher et al. tests some 1,270 concepts across eight domains and finds 65 of them can never be articulated to LLMs through language, quantifying the limits of prompting.

2026-10-31 ~ 2026-10-31 · 2 related posts

• Testing 1.2k concepts: some prompts remain inarticulable no matter the model — sanmikoyejo · 2026-10-31
• New paper quantifies ineffable concepts: 65 of 1,270 can never be taught to LLMs via language — sanmikoyejo · 2026-10-31