The work of Pietro Gaietto of Genova, Italy, predicted the motif and location of a carved human head with a beard on one of the seven Ohio flint sculptures found together in a "hoard." Please see the "Subtle Artifacts" link to read the article and see photos of these seven associated sculptures found in Licking County, Ohio.
One of the seven Ohio sculptures was a stunning visual match to one of Gaietto's Italian sculptures and only after reading Gaietto I detected a man's head profile in the place on the Ohio sculpture where he said it would be on this type of artifact. Any person in a room with this sculpture can see the human head profile once it is brought to their attention, just as Gaietto brought it to my attention and helped me to understand what had been a strangely amorphous but obviously worked flint cobble until then. This kind of "replication" of Gaietto's work has led me to conclude it might be very instructive on the subject of pre-sculpture and early sculpture- even in the Americas. As crude, rough and strange as they seem, the forms and general aesthetic sense invoked by the sculptures identified and documented by Gaietto have also been independently detected by others as suspected artifacts in Eurasia and the United States.