Something I can't understand

Rating: 5/10 (30 November 2014)

There are a lot of things I can't understand about The Dark Knight Rises , a final part of Dark Knight trilogy . First , why did Alfred leave Bruce's house ? Or did he know something bad would happen with Bruce Wayne ? And where did he go when Bane attack Gotham ? The secret that I never know . Second , when Bruce Wayne in prison , he met Ra's Al Ghul . But ... Ra's Al Ghul was dead in the first part , Batman Begins , why he appeared in the prison and talk with Bruce ? May be Ra's Al Ghul's appearance is Bruce's imagine , but another wrong thing happened : why Bruce know Bane is Ra's Al Ghul's son ( exactly Miranda is Ra's Al Ghul's daughter ) ? Third , in the ending , Alfred witnesses Bruce and Selina together . But Bruce was dead , why ... ? And fourth , Blake changed his name , Robin and went to the Batcave . New hero , Robin appeared , and I asked myself : " The next Dark Knight trilogy , fourth part will release with new hero , Robin and explain anything about part 3 ? " The final part is so lazy , serious and dark , I don't like it . 8.0 is a chance for this film .