When an artist explains what he is doing, he usually has to do one of two things: either scrap what he has explained, or make his work fit in with the explanation.
Alexander Calder, A. S. C. Rower, Ugo Mulas, Pier Giovanni Castagnoli, Palazzo delle esposizioni (Rome, Italy) (2009). “Calder: Sculptor of Air”, 24 Ore Cultura