The Electronic Signatures and Records Act (ESRA) provides that signatures made via electronic means will be legally binding just as hand-written signatures now are. The law also enhances and clarifies the authority of government to create and retain records in computer produced electronic form.
Shippo is the first character to join Inuyasha and Kagome in the quest to defeat Naraku and purify the Shikon no Toma. He is an adolescent fox demon or kitsune youkai as he is refereed to in the Japanese version of the anime. Although Shippo's age is never mentioned he appears approximately five years old.
In short Itachi reason why as an example is that Itachi became the CHIEF of ANBU when he was 13years old!!!!! Whilst at that age Kakashi had just become a jonin and was under the teachings of minato. Also Kakashi admitted it seeral times through the manga and anime.sukuyomi (Genjutsu). Tsukuyomi is a high level genjutsu performed using Itachi's Mangekyou Sharingan. The opponent is trapped inside an illusionary world where Itachi can torture him any way he wants because seconds in the real world turn into days inside the Tsukuyomi realm.