Problem: According to the chapters of Hillenbrand's "Introduction to Islam" titled "Muhammad" and "Qur'an", Please identify and discuss: (1 quote)
1) One pre-existing bias you had that was pleasantly challenged by the readings (i.e. you were happy to find this bias is not accurate)
2) One pre-existing bias you had that was unpleasantly challenged (i.e. you were a bit dismayed or unnerved that a perception of Islam you had is less palatable than you thought)
3) One pre-existing bias you had that was confirmed or deepened by these two chapters (this one can be a pleasant or unpleasant bias that was confirmed)