At the center of the exhibition is a sculptural installation titled Geometer (2015), consisting of a hollow, lifesize headless cast figure lined with gold. He kneels on one knee with his hand on a giant crystal-like rock, while in his other hand he clutches a pole topped with a framed glass etching of a what looks like a celestial observatory. Resembling a lone explorer, or perhaps an astronaut planting a flag on the moon, the figure could also be a self-portrait of the artist, serving to remind us of the blurry relationship between discovery and creativity, fact and fantasy. Pestana questions the possibility of ever really knowing our world if human observation and knowledge is limited by the methods we’ve created to study it. “Our tools—systems and devices of measurement, for example—circumscribe our horizons of thought,” he explained.