One day at work the Internet went out around 4pm, most of my co-workers couldn’t work: most of the information they needed to work were online, and they didn’t have local copies. If I was writing Python at the time, being offline would have been a problem, I rely on the information on docs.python.org, frameworks, and libraries’ documentation: all of which are online.
With Go, it’s less of a problem: if you have godoc installed you can access the installed packages’ documentation using a local HTTP server:
$ "$GOPATH/bin/godoc" -http=:8080
Point your browser to localhost:8080 and here you have it: the documentation for all your installed packages.