Who, or what, is conscious? How can we decide? Where in nature do we find consciousness? This can seem like the hardest problem in this whole field: the question of the consciousness of others. I am aware. So are you. We think, we feel, the world shows up for us. But what about an ant, or a snail, or a paramecium? What about a well-engineered robot? Could it be conscious? Is there a way of telling, for sure?