An update is available for your computer (Linux vs Windows vs Mac) http://is.gd/H3zVdu /via @shawnp0wers
Bedtime stories? Nah, I showed D1 my signed copy of “Applied Cryptography” & let her figure out Bruce Schneier’s cipher puzzle inscription.
@shawnp0wers Look it up on heavens-above.com … was likely a satelite or shuttle+ISS