Lo que no se percibe a la luz (What is not perceived in the light) is a label, seemingly with nothing written on it, located in a part of the exhibition space where it does not obviously refer to any artwork. It appears to be a museum error.

But when the lights of the exhibition room go out, the public leaves, and the exhibition space is no longer active, the text – printed in fluorescent ink – becomes legible.

The next day, when the museum reopens to the public, the label text is invisible once more.

Lo que no se percibe a la luz plays with the multiple contradictions of the exhibition space (light and dark; full and empty; information and misinformation; intention and error) by way of a generic contradiction: the work fulfils its function when the public is not present.