Forecast and not

Even if, as a component in the communication is non-verbal and unconscious, so also in art a part of the final result escapes the intent or the forecasts of the artist; of these unexpected results intrigue me the causes, not the ones that we can define rooted (training, personal history) but those momentary, accidental: Leonardo also had toothache, will also Caravaggio had indigestion, a gloomy day will have saddened Tiepolo ; and if, and how deep, these accidents have left traces in their works; or can be ignored these temporary situations, if they were able, and if something of this resistance is left in the work, and so on.