The first Lonely Planet book, Across Asia on the cheap, was published in 1973 afaik, so there weren't many electronics around back then. So it has little to do

The first Lonely Planet book, Across Asia on the cheap, was published in 1973 afaik, so there weren't many electronics around back then. So it has little to do with the type of traveler you discuss, not that these didn't show up in more recent decades. You can find the original one on archive.org if you'd like.