Book Log 2018 #31: The Code Book by Simon Singh

I remember having particularly meh feelings about this book, which looks at the history (and future) of cryptography, but I have no idea why. Did it not line up with what little I already knew about the subject? Did it repeat stories that I may not have considered historically accurate? Did its sections on the future get too fanciful? Or was I just in a mood? 

Can't say, so you might as well dip in and see if my ambivalence is justified.