Art objects are not the same as the work of art
Dewey draws a sharp distinction between the physical art product — the canvas, the carved stone, the printed poem — and the work of art itself, which he locates in the active experience of someone perceiving it. A painting hanging unseen in storage is, in his terms, merely a potential work of art; it becomes actual art only when a person's perception engages with it and completes the process the artist began.
This matters because it shifts responsibility for aesthetic meaning away from the object alone and toward the interaction between object and perceiver. Two people looking at the same painting can have genuinely different aesthetic experiences, not because the paint has changed but because each brings a different quality of attention and prior experience to the encounter.
Dewey uses this distinction to criticize museum culture, which he thought encouraged people to revere the physical object's prestige rather than actually engage perceptually with it. Takeaway: a work of art isn't finished on the wall — it's completed only in an attentive viewer's active perception.