I wish I could go back in time and give my 11-year-old self a book of puzzles like this. I loved these kinds of things when I was a kid. Meanwhile, I'm proud t

I wish I could go back in time and give my 11-year-old self a book of puzzles like this. I loved these kinds of things when I was a kid. Meanwhile, I'm proud to say that I got 15/15 at age 27 -- but I'm less proud to say that I had about 9 seconds to spare :)