In the context of this artwork, explain the Authorship of the Interpretation.
It has always been agreed that the Louvre Virgin of the Rocks is entirely by the hand of Leonardo da Vinci. The Virgin of the Rocks in London has generally been seen as having been designed by Leonardo and executed with the assistants. The Louvre website and various authors suggest that the entire painting is by Ambrogio de Predis, painted under Leonardo's supervision between 1485 and 1508, or perhaps largely the work of de Predis, with minor intervention by Leonardo.Since the recent cleaning, National Gallery curator Luke Syson has stated that the quality which has been revealed indicates that the work is mostly from the hand of Leonardo, and that participation of members of Leonardo's workshop was almost certainly less than previously thought.Geologist Ann C. Pizzorusso argues that there are geological inaccuracies in the London version, unlike the Louvre version, which mean it is unlikely to have come from Leonardo's hand.  Taylor disputes this, drawing attention to the fact that, at the time of writing, Pizzorusso had plainly not seen the glacial lakes to which she referred, and had mistaken clumps of moss for sandstone boulders.
Leonardo da Vinci National Gallery Louvre Ambrogio de Predis Luke Syson