PS is a talking mirror installation. The mirror engages potential participants by calling out, "Psst." Upon leaning in close, the mirror whispers a secret. The mirror only reveals a single secret at a time. Once the participant walks away, the mirror returns to soliciting.
Why secrets? Secrets are an established mode of communication. They simultaneously provide a release for the author while acting as an offering to the receiver.
A secret is a way of recognizing part of the self at a distance. A mirror is a codified way of seeing the self which is not the self but the other. PS' use of a mirror, invites the receiver to consider the part of them tied to the secret.