They usually are

“Disturbed Interactions” (acrylic on canvas), by Pat Paxson, in the group show “The Momentary,’’ at Fountain Street Fine Art, Boston, through Aug. 29.

She tells the gallery (mysteriously…):

"‘Function of time’ for me is: imaginary in terms of temporal possibilities in outer space, related to our uncontrolled release of physical and experimental sounds and images. ‘Time’ for me functions by way of imagination as well as articles in newspapers and results of experimental painting.’’