For a lot of us, having to spend 24 hours away from our smartphones and computers seems like a horrific nightmare. I mean, what are we? Cavemen? But that 24 hours could be a very enlightening experience, and that's exactly what the National Day of Unplugging wants to encourage. Obviously, if you're reading this post, you're not taking part in the National Day of Unplugging, but perhaps in the future you will.