Novelist Lev Grossman (The Magician, The Magician King) writes about the merits and dangerous of reading and walking at the same time.

I know it’s a weakness. A vice even. You’re making a choice: essentially what you’re saying (or what I’m saying) is that sometimes you’re more interested in fiction than in reality and you don’t care who knows it. You’re saying, I’m willing to chuck most or probably all of my dignity, and some measure of my personal safety, and your personal safety, because it’s more important to me to keep reading this book I’m reading than it is to look where I’m going.

We have definitely done it – sometimes you just can’t put that book down!

A Book Lover’s Guide to Reading and Walking at the Same Time