Overall decent episode. I don't really expect Doctor Who, or any show like it, to portray anything but super fantastical things when it comes to most subjects - especially technology. (SPOILER)The Great Intelligence being the bad guy should make for some entertaining episodes and pretty neat twists.

Currently trying to figure out how, or if, the missing numbers from Clara's book are important (1-9, 16, and 23). Those seem like something that would come into play later on as a clue to what, or who, she really is. Also, did anyone notice the author of the book?