xreactivity

a measure of relatedness between two antigenic substances

SPOILER ALERT!

Mr. Penumbra's 24-Hour Bookstore by Robin Sloan

Mr. Penumbra's 24-Hour Bookstore - Robin Sloan

This book had me at the glow-in-the-dark cover!

 

A very entertaining read, chock-full of lovable geeks and quirky bibliophiles. I’m glad the puzzle was solved ultimately, not by the Google tech-machine, but by the ingenuity and heart of the main character. Extra points for the typography discussion.