This is a really well-crafted talk on creativity. In it, John Cleese cites academic research and his own personal experience to illustrate some very practical advice on how to become more creative.
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I've been working recently on creating my own space/time oasis inspired by these ideas. To pay back a little I'd like to offer my notes as a quick-reference guide. I do this sometimes - it will give you a refresher on the talk without having to dive into a full transcript. Enjoy.