The progress of science is not a simple linear advance, each stage marking the solution of posing of problems previously implicit or explicit in it, … - Eric Hobsbawm

Why brilliant fashion-designers, a notoriously non-analytic breed,sometimes succeed in anticipating the shape of things to come better than professional predictors, is one of the most obscure questions in history; and, for the historian of culture, one of the most central.

For where we stand in regard to the past, what the relations are between past, present and future are not only matters of vital interest to all: they are quite indispensable. We cannot help situating ourselves in the continuum of our own life, of the family and group to which we belong. We cannot help comparing past and present: that is what family photo albums or home movies are there for. We cannot help learning from it, for that is what experience means. We may learn the wrong things - and plainly we often do - but if we don't learn, or have had no chance of learning, or refuse to learn from whatever past is relevant for our purpose, we are, in the extreme case, mentally abnormal.

Surrealism was a genuine addition to the repertoire of avant-garde arts, its novelty attested by the ability to produce shock, incomprehension, or what amounted to the same thing, a sometimes, embarrassed laughter, even among the older avant-garde.