Over the edges and horizons of the probability landscape, waiting for us, are the unseen, unthought forests and deserts of the visible. Finn Brunton 
Brunton’s statement is a bit out of context, but I couldn't resist its topographic poetry. It called to mind a site visited earlier this year located near Lake County's Warner Valley. This selection of photographs of archaic petroglyphs attempts to capture an instance of a “probability landscape.” Warner Valley
 Brunton discusses visual analysis of paintings by computers using algorithms. The materials, strokes, lines, and marks are “decisions made against the backdrop of all others possible marks not made.” For him this means, “every painting becomes a landscape painting.” Hence, a probability landscape. This stylistic and material analysis leads to discerning authenticity, attribution, and dating. With rock art, variables may include pigments, application methods, pecking and abrasion, and the characteristics of the stone and its coatings. Finn Brunton, “The Hidden Variable.” Artforum, November 2014, p.120.