How close is AI to human common sense?

AI has made dramatic progress on common-sense benchmarks but still fails in surprising ways. It lacks the embodied, experiential grounding that gives humans intuitive understanding of how the physical and social world works.

Why does AI lack common sense?

Common sense emerges from living in the world — experiencing gravity, temperature, social consequences. AI learns from text descriptions of the world, not from inhabiting it. This creates a fundamental gap.

January 22, 2026 · 5 min read · Juan C. Guerrero

Can AI Have Common Sense?

An honest assessment of what AI can and can’t do — not hype, not panic.

AI Capability: Partially

AI is passing common-sense tests. But common sense isn't test performance. It's the background understanding that comes from having a body in a world. AI doesn't have that.

What AI can do today

Here’s what AI systems can currently do in this area:

Pass many common-sense benchmarks
Answer everyday questions correctly
Reason about physical scenarios
Understand cause and effect in text

These capabilities are real and improving. Anyone who dismisses them isn’t paying attention.

What’s still missing

Here’s what AI structurally cannot do — not “yet,” but by design:

Embodied understanding of the physical world
Genuine understanding vs. pattern-matching
The ability to navigate truly novel situations
Social common sense
Knowing what 'should' happen vs. what 'could' happen

These aren’t just harder problems waiting to be solved. They require qualities that emerge from being alive, embodied, and mortal. In The Last Skill, I call this agency under consequence — the willingness to be the one who answers for the outcome.

Why this matters

Common sense is the most underrated form of intelligence. It's knowing that a glass of water shouldn't go on top of a laptop — not because of data, but because you've lived in the physical world. AI hasn't.

The pattern is consistent: AI handles the predictable. Humans handle the consequential. The question isn’t whether AI can have common sense at all — it’s whether the parts it can do are the parts that matter.

The bottom line

AI is passing common-sense tests. But common sense isn't test performance. It's the background understanding that comes from having a body in a world. AI doesn't have that.

The distinction isn’t between humans and machines. It’s between capability and identity. AI is capable of many things. But the question “Can AI have common sense?” is really asking: can it do the part that matters? And the part that matters is always the part that requires being human.

For the complete framework on what makes humans irreplaceable — including the four proofs of irreplaceability and why “agency under consequence” is the last skill — read The Last Skill: What AI Will Never Own by Juan C. Guerrero.

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