Follow the Uneducated Prophet

The Quran claims that Muhammad could not read or write (7:157, 158) yet expects us to follow his advise which was supposedly revealed to him in the book (Quran) without question.

The Quran charges that those that don't are worse off than dumb cattle. (Surah 25:44)  "And when they see you (O Muhammad) they treat you only in mockery (saying): "Is this the one whom Allah has sent as a messenger?  So who would want to read a book written by someone who cannot read or write?  I would guess the cattle have more sense.