A.I. Artificial Intelligence ending explained (spoilers)

[Johnsonmidge]

David is searching for a fairy and he finds a statue under water that he thinks is the fairy that can grant his wishes. He starts praying for his wish to come true until he frozes..2 thousend years later a new species ( some bealive is an alien race and others bealive that they are robots) finds the frozen david and grant him his desired wish.They tell David that they can only bring people back for one whole day if they have a sample of their DNA. Teddy had a lock of Monica's hair from when David cut off a piece while she was sleeping, so Monica is revived for one day. At the end of the day, Monica falls asleep and dies, while David finally falls asleep. He does not become real, he shuts down.