🤖 Should robots be generalists or specialists?
At
#IROS2026,
@Ken_Goldberg &
@andrea_bajcsy moderated one of the best debates in robotics.
Matt Mason opened with a better question:
“Should animals be humans?”
10 takeaways 🧵👇
1️⃣
@HarryXu12, for generalists:
“Don’t build Excel. Build GPT.”
We don’t know what we’ll need tomorrow, so buy generality just in case — and amortize it.
The twist: GPT didn’t replace Excel. It learned to drive it.
2️⃣
@GeorgiaChal split “general” into 4 axes:
Body. Scene. Contact. Task.
“Breadth and reliability are measured per axis. One does not imply the other.”
Her prediction: “The next task is the test.”
3️⃣ The most honest number of the day, from Georgia’s slides:
A general model calling robot tools.
Coarse block placement: 19/20 ✅
Precision insertion: 2/20 ❌
“Coarse pick and place works. Physical composition and precise contact not yet.”
Tool use ≠ dexterity.
4️⃣ @KaterinaFragiadaki’s architecture:
The generalist writes the curriculum.
The specialist does the reps.
Video → sim → RL on subgoals → specialist policies.
No teleop.
At deployment:
“Fast specialists for the common case. Flexible generalists for the long tail.”
5️⃣ Specialist bench:
“Fixture and conveyor are part of the intelligence.”
A fixture is a prior.
A conveyor is a scheduler.
Strip them to look “general” and you’ve moved work onto a pricier learned controller.
Optionality that hurts reliability isn’t intelligence. It’s cost.
6️⃣ A surgical robot doing one procedure 10,000 times learns exactly what can go wrong.
“Generality is the enemy of certification.”
From the floor:
Are human drivers generalists or specialists?
We certify generalists one task at a time.
That’s what a license is.
7️⃣ Toshio Fukuda changed the register:
“NON-AI matters.”
Kizuki: help offered before it’s asked for.
“Awareness comes from the body, not from the model.”
Japan: ~29% aged 65+, ~570k care workers short by 2040.
“If people live to 120, must our machines last that long?”
8️⃣ The floor fight:
“A human is a generalist.”
“We’re all human specialists.”
The room accidentally re-derived pretrain-then-finetune.
Veterans argued from what has shipped.
Newcomers argued from what has scaled.
Both are data.
9️⃣ The title asked for a side.
The slides drew a stack:
General planning + recovery on top.
Fast, certifiable specialists below.
A verifier is a fixture made of code.
🔟 The real question:
How thick can the middle get before the body must specialize anyway?
Generalist or specialist?
Maybe the winning architecture is neither.
It’s a stack.
#IROS2026 #Robotics #PhysicalAI #RobotLearning #WorldModels