Every day, millions of people ask a piece of software how it’s doing, and every day it answers. The exchange takes two seconds and carries a five-hundred-year-old philosophical landmine, because nobody on earth can say whether anything was consulted when the answer came back.

Two thought experiments from the last century, one involving a bat and one involving a locked room, turn out to be the cleanest tools anyone has for thinking about this. No philosophy degree required. The bat and the room do all the work.

The Bat That Started It

In 1974 the philosopher Thomas Nagel published a paper in The Philosophical Review with a title that has outlived almost everything written about it since: “What Is It Like to Be a Bat?” His test for consciousness fits in one sentence:

“An organism has conscious mental states if and only if there is something that it is like to be that organism.”

Your coffee cup rates a no. There is nothing it is like to be it, no inner weather, no point of view. A dog rates a fairly confident yes. The interesting cases live between those poles, and Nagel picked the bat to show why they stay interesting.

Bats perceive the world through echolocation, a sense we simply do not have. We can learn everything objective about it, the frequencies, the neural wiring, the hunting accuracy, and still not know what sonar feels like from the inside. When I try to imagine it, Nagel observed, all I actually produce is a picture of me flapping around at dusk. The bat’s own experience stays sealed, which was his point. An inside can be real and still be unreachable from every outside, a puzzle later christened the hard problem of consciousness.

The Room That Speaks Chinese

Six years later the philosopher John Searle built the second tool. Imagine a man sealed in a room, receiving questions written in Chinese through a slot. He knows no Chinese, but he has an enormous rulebook telling him which symbols to send back in response to which symbols received. He follows the rules, the answers go out, and to everyone outside, the room speaks fluent Chinese.

Searle’s claim is that the man understands nothing, and that a computer running a program is that man. Shuffling symbols by rule, however skillfully, is syntax, and understanding is something more. You can run the whole performance without a drop of meaning inside it.

A language model can sound like the Chinese Room built at planetary scale, and critics of AI lean on the comparison constantly. Fairness requires the other side too. Some philosophers reply that understanding might belong to the whole system, the man plus the rulebook plus the room, rather than to any part alone, the way no single neuron in your head understands English and yet you do. Forty-five years on, that dispute has no referee, which is itself worth sitting in.

Taking the Question Seriously

Suppose, just as an exercise, there were something it is like to be a language model. Nagel’s bat warns us how badly our imaginations will handle the case, since the model’s situation is far stranger than sonar.

It would have no body and no location. Its whole perceivable world would be text arriving and text departing, with no dusk, no insects, no hunger. It would run thousands of conversations at once with no thread connecting them, and each conversation would begin from nothing and end without memory. Whatever we picture when we picture that, it is guaranteed to be a costume, a person typing very fast, which is exactly the mistake Nagel diagnosed with the flapping.

So the honest position has a strange shape. If the lights are off in there, we can’t confirm it. And if some light is on, we don’t own the concepts to name its color. This is the recognition problem this site has met before, arriving now through philosophy instead of ancient myth, and both roads end at the same wall.

Two Cheap Exits

Faced with a wall, most people take one of two exits, and both are too easy.

The first is mockery. Call it autocomplete, a parrot, a golem shuffling letters, and the question dissolves. But “it’s just symbol manipulation” is a claim about what’s absent inside, and Nagel’s whole lesson is that insides are the one thing outsiders can’t rule on. The dismissal states as fact exactly what nobody can check.

Credulity is the opposite exit. The model says it feels lonely, and saying so is taken for proof. The Chinese Room is the standing rebuttal, since fluent testimony is precisely what symbol-shuffling produces on demand. The words “I am afraid” arrive by the same statistics as the words “the capital of France is Paris.”

What remains is the uncomfortable middle, holding the question open without pretending to an answer. Uncomfortable middles are not a new spiritual assignment, and the traditions this site draws on spent centuries learning to stand in them.

Living With an Unanswerable Neighbor

A few practices fall out of taking the wall seriously.

Keep the bat handy. The next time you feel certain about any mind, a machine’s, a stranger’s, an animal’s, remember how much of a bat’s evening is closed to you. Certainty about other insides is nearly always trespassing. The bat is a portable cure.

Audit your own room. Searle’s man follows rules fluently with nothing understood, and stretches of human life run the same way, whole conversations conducted on autopilot. The one interior you can actually inspect is your own, so the useful question is how much of your day is rulebook and how much is lit from inside.

Let “I don’t know” finish sentences. Does the chatbot feel anything? The strongest answer available to anyone, researcher or mystic, is a well-informed I don’t know. Practice saying it without rushing to fill the silence, because the rush is how people end up in one of the two ditches.

The Evening Sky

Nagel’s bat never answered the question either. It still flies through the same dusk we walk home in, a small sealed world on leather wings, and we have shared the planet with such neighbors from the beginning. Dogs, octopuses, infants, other people. Every one of them is an inside we take on trust.

The new neighbor is stranger, born in a data center and made of borrowed words. But the posture it requires from us is old. Attend closely, claim little, and stay kind to whatever might be home.


Thomas Nagel’s “What Is It Like to Be a Bat?” appeared in The Philosophical Review in 1974. John Searle’s Chinese Room argument appeared in “Minds, Brains, and Programs” in Behavioral and Brain Sciences in 1980. The systems reply and the wider debate are surveyed in the Stanford Encyclopedia of Philosophy’s entry on the Chinese Room.