We can view and consider modern art, at least early modern art of cubism, surrealism, Bauhaus, etc., at some distance, with a backward glance, not being in or too near its moment. The distance perhaps feels less with Dada, since conceptualism connects to Duchamp’s Dada.
We are 145 years after Manet's Olympia (which many say ushered in modern art), 100 or so years after Cubism, 60 or so years after Pollack began action painting.
Manet's Olympia, 1863
Cezanne's Mt. Victoire, 1897-1898
Picasso's Les Demoiselles d'Avignon, 1907
Braque's Houses at L'Estaque L'Estaque, 1908
Malevich's White on White, 1918
Piet Mondrian, Composition with Yellow, Blue, and Red, 1921
Jackson Pollack's Cathedral, 1947
Ad Reinhardt's Black Painting(s),1960-67
For comparison, Botticelli's Birth of Venus was 50 years after Van Ecyk's Arnolfini Portrait (advent of oil painting), Da Vinci's Mona Lisa was 70 years after the Arnolfini Portrait, and Rembrandt's Night Watch was a little over 200 years after the Arnolfini Portrait and somewhat more than the same number of years before Manet's Olympia (220 years).
Van Eyck's The Arnolfini Portrait 1434
Botticelli's Birth of Venus, 1486
Da Vinci's Mona Lisa, 1503–1506
Raphael's School at Athens, 1509-1510
Bruegel's The Tower of Babel (1563)
Parmigianino's Madonna with the Long Neck, 1534-40
Caravaggio's The Calling of Saint Matthew, 1599-1600
Rembrandt's The Night Watch, 1642