Whether that line of logic is accurate or not, it did help me to realize that in my own life I have very few opportunities to test my (mis)understandings of the world around me and find where I'm wrong. I desperately hide in my safe zones.
I've recently found reading books a good way to create fresh safe zones where I can view the world from different perspectives and test my beliefs. People of all different sorts in all different cultures from nearly all time periods have written books, and often written them well enough to transport the reader into their reality. It may not be "play", but I'm greatly enjoying the diverse worlds I have recently been reading myself into.
I don't find many internet writings to have this level of depth that allows me to rethink myself as I read.