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Why it worked

The mechanics

Hook
Style
Tone
Written for

Analysis by ViralLoop — not written by the original author.

Bob McGrew on AI · ViralLoop

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Post by Bob McGrew on X

Bob McGrew@bobmcgrewai

“Models keep getting more impressive at the rate the short timelines people predict, but more useful at the rate the long timelines people predict.” Good post.

416 likes9 repliesPosted Dec 2, 2025

View the original on X Written by Bob McGrew. Captured Sep 4, 2026.

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Viral score

Based on absolute engagement — the platform doesn’t expose follower counts here, so large accounts score higher.

From likes, comments.

Why it worked

Ends on a short line that is easy to quote and repeat.
Short enough to read in full without expanding, which removes a step before the point lands.
Quotes someone directly, which makes the moment concrete rather than summarised.

The mechanics

Hook: Plain observation
Structure: Hook → Landing
Style: Conversational paragraphs at a steady pace.
Tone: plain, matter-of-fact
Written for: People building with AI

Analysis by ViralLoop — not written by the original author.

Topics

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More from Bob McGrew

That o1 is better than GPT-4.5 on most problems tells us that pre-training isn't the optimal place to spend compute in 2025. There's a lot of low-hanging fruit in reasoning still. But pre-training isn't dead, it's just waiting for reasoning to catch up to log-linear returns.