What's with the negativity in here? This is a slide deck that was used by speakers at Google IO in 2011 to present a session about HTML5. They figured it may be useful so they shared it online so attendees and people who couldn't make it could see and play with the slides afterwards. It makes no sense to criticize these slides for not working in Firefox, Opera, on mobiles, or any other use case for which they were not developed. It's a slide deck. Be glad these guys felt like sharing their knowledge with you.