Excerpt: When the zombie apocalypse hits, you’ll want to have a copy of Wikipedia with you. And you’ll want to make sure it works even if the power is out, cellphone and internet connections are nonexistent, and you’re hunkered down in a remote cave.
Pros: Massive, crowdsourced encyclopedia in a portable package. Simple search interface. Requires no internet connection. No monthly fees. Runs for months on two AAA batteries.
Cons: Dim, low-contrast screen. No graphics in encyclopedia entries. No easy way to jump from heading to heading within articles. Updating requires a subscription, or a microSD card reader.