 Straus and Cave attributed Boule's errors to the severe osteoarthritis in the La Chapelle-aux-Saints Neanderthal, although physical anthropologist Erik Trinkaus has suggested that Boule's errors were primarily related to the fragmentary nature of the remains.This specimen had lost many of his teeth, with evidence of healing.All of the mandibular molars were absent and consequently, some researchers suggested that the 'Old Man' would have needed someone to process his food for him.