What Actually Matters in AI? - with Zhuang Liu (Princeton)

In this episode, we hosted Zhuang Liu, Assistant Professor at Princeton and former researcher at Meta, for a conversation about what actually matters in modern AI and what turns out to be a historical accident.

Zhuang is behind some of the most important papers in recent years (with more than 100k citations): ConvNeXt (showing ConvNets can match Transformers if you get the details right), Transformers Without Normalization (replacing LayerNorm with dynamic tanh), ImageBind, Eyes Wide Shut on CLIP's blind spots, the dataset bias work showing that even our biggest "diverse" datasets are still distinguishable from each other, and more.

We got into whether architecture research is even worth doing anymore, what "good data" actually means, why vision is the natural bridge across modalities but language drove the adoption wave, whether we need per-lab RL environments or better continual learning, whether LLMs have world models (and for which tasks you'd need one), why LLM outputs carry fingerprints that survive paraphrasing, and where coding agents like Claude Code fit into research workflows today and where they still fall short.

Timeline

00:13 — Intro

01:15 — ConvNeXt and whether architecture still matters

06:35 — What actually drove the jump from GPT-1 to  GPT-3

08:24 — Setting the bar for architecture papers today

11:14 — Dataset bias: why "diverse" datasets still aren't

22:52 — What good data actually looks like

26:49 — ImageBind and vision as the bridge across modalities

29:09 — Why language drove the adoption wave, not vision

32:24 — Eyes Wide Shut: CLIP's blind spots

34:57 — RL environments, continual learning, and memory as the real bottleneck

43:06 — Are inductive biases just historical accidents?

44:30 — Do LLMs have world models?

48:15 — Which tasks actually need a vision world model

50:14 — Idiosyncrasy in LLMs: pre-training vs post-training fingerprints

53:39 — The future of pre-training, mid-training, and post-training

57:57 — Claude Code, Codex, and coding agents in research

59:11 — Do we still need students in the age of autonomous research?

1:04:19 — Transformers Without Normalization and the four pillars that survived

1:06:53 — MetaMorph: Does generation help understanding, or the other way around?

1:09:17 — Wrap

Music:

• "Kid Kodi" - Blue Dot Sessions - via Free Music Archive - CC BY-NC 4.0.
• "Palms Down" - Blue Dot Sessions - via Free Music Archive - CC BY-NC 4.0.
• Changes: trimmed

About: The Information Bottleneck is hosted by Ravid Shwartz-Ziv and Allen Roush, featuring in-depth conversations with leading AI researchers about the ideas shaping the future of machine learning.