Two solo shows, organized by independent curator Lily Alexander, explore the relationship between the seen and the unseen. Minnesota artist Doug Argue (b. 1962) takes on the mysteries of language and the cosmos in huge, explosively bright abstract paintings that incorporate passages from the Bible, Melville and computer code. San Francisco-based Bill Fontana (b. 1947), aware that visual stimuli tend to override the aural, offers videos and ambient sound recordings of bridges, harbors and towers, each designed to shift our perceptual focus toward the invisible.