An additional question:
Antonio and Renato, how much involvement have you had with Brad Hudson, and what elements of training did you advise him on? (the only one I know of is Renato's hill sprints, but his idea of sandwhiching the training down seems unlike either of your programs). What do you think of this idea of beginning with high mileage and short sprints, then moving to threshold work and longer reps, finally meeting in the middle at race pace training?
Also, what do you think of the potential of Dathan Ritzenhein? It has been often debated on this board, some saying he can run as fast as 12:55 and break the American record, others criticizing him for running 8:23 in the 2 mile, 13:22 in the 5,000, 27:38 in the 10,000, and 7:43 in the 3,000, saying he will not run much faster.