I'm holding in the palm of my hand the sum of all human knowledge
Well not quite but close. I'm holding a hard disk that has ALL of Wikipedia's text in 10 different languages.
Yes you can download all of Wikipedia and yes it can easily fit in a hard drive. Isn't that amazing? Text is incredibly dense compared to images and video. Around 22 GiB for English Wikipedia alone and 56 GiB for the 10 languages I downloaded.
I also have all of Wiktionary in the same hard drive. It's around 16.4 GiB.
Yeah it's pretty incredible. Wikimedia is the kind of project that almost feels like a small glimpse into a better world. What the internet could have been. It's got some problems of course but it's still a huge success.