\u201cI live 20 miles per hour from the University.\u201d Is that statement confusing? \xa0It should be.\xa0 In Episode 20, we take a look at Rates and Functions, and discuss how they have been mistreated for the past century.\xa0 More importantly, we\u2019ll take a look at how key concepts and mathematics can get confused if we don\u2019t say the right thing.\xa0 For example, would you feel confused if I had began with \u201cI live 20 miles from the University.\u201d?\xa0 This Episode is a replay of a presentation that I delivered the Pacific Region AAAS conference at San Francisco State University in August 2009.\nThis Episode summarizes and\xa0synthesizes\xa0a lot of the material we\u2019ve looked at over the past 9 videos. \xa0New visitors will find that it serves as a good introduction to the material on the site.\nThe following specific points are covered in this video:\n\nA brief history of moving systems equations and SRT\nA look at the mathematical and conceptual mistakes we\u2019re still making today\nRevisiting the improved results to the Michelson-Morley and Ives-Stillwell equations\nImplications on position-based navigation systems\n\nIn addition to the video, a PDF version of the presentation is available for download.\n Corrections:\n\nAt 15:10 \u2013 the arguments to the Tau function invocation in the Key Findings callout should be \xa0(x\u2019,0,0,x\u2019/(c-v)). \xa0This is corrected in the PDF.\nAt 16:20 \u2013 the callout should say \u201c\u2026Average of the Approaching and Receding Doppler shifts\u201d\nAt 16:55 \u2013 I should have said \u201crevising Michelson-Morley\u201d instead of saying \u201crevising Ives-Stillwell\u201d\n\nUpdate: I\u2019ve added the following two links from the NPA Video Conference I delivered in October 2009. One link is for the video and the other is for the slides. I think this video is essentially the \u201cDirector\u2019s cut\u201d of the presentation.\nBonus: Download NPA Conference Video in Windows Media Format\nBonus: Download NPA Conference Video in PDF Format\nhttp://www.relativitychallenge.com/media/RelativityChallenge.com-Episode20_iPod.m4vDownload Podcast | Open Player in New Window\nDownload in Windows Media Format\n Download in PDF Format