tag:blogger.com,1999:blog-28837843.post5059650958579061563..comments2024-03-19T07:10:27.303-07:00Comments on Quark Soup by David Appell: Jevons Paradox, U.S. VersionDavid Appellhttp://www.blogger.com/profile/03318269033139447591noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-28837843.post-65083169032019912972015-01-09T13:14:40.145-08:002015-01-09T13:14:40.145-08:00BTW, how do you get a factor of 2.8 in energy prod...BTW, how do you get a factor of 2.8 in energy productivity since 1973 when chart 3 shows a value of ~4,4kwh/$ in 1973 and a most recent value of ~2.0kwh/$? Shouldn't the ratio be 2.2?<br /><br />Getting back to my earlier comment, I wouldn't have objected if you'd left it at "we're spending most of that by consuming more" but for some reason you had to tack on the word "energy" and make the statement not precisely accurate. And I disagree that that is the essence of Jevons Paradox. It's not enough for there to be some rebound effect as a result of energy efficiency making consumption cheaper and as far as I know no one serious disputes that there is. There's no paradox until and unless the rebound effect is strong enough to raise energy consumption higher than it was before the efficiency gains.Jonhttps://www.blogger.com/profile/18246316232020910459noreply@blogger.comtag:blogger.com,1999:blog-28837843.post-53954219176606413272015-01-09T09:47:04.428-08:002015-01-09T09:47:04.428-08:00Jevon's paradox it no more paradoxical than (o...Jevon's paradox it no more paradoxical than (or perhaps has been co-opted by the ad business) the possibility of spending more by purchasing 10 items "on sale" rather than only one item at the "regular" price.<br /><br />Also, see hierarchies of infinity, below.<br /><br />And, as previously revealed, my favorite, essentially a re-statement of said paradox: "Too Smart for Our Own Good" by Craig Dilworth<br />-------<br /><br />There are many youtube video lectures in praise and awe of scientists (and mathematicians). <br /><br />This thread on Paul Dirac will get you into the early 20th century physicists: <br />http://tinyurl.com/mdnk4kw<br />-----<br /><br />John PumaJohnhttps://www.blogger.com/profile/12479974040070719985noreply@blogger.comtag:blogger.com,1999:blog-28837843.post-69319192166044752962015-01-09T09:12:26.307-08:002015-01-09T09:12:26.307-08:00"Energy efficiency has given us a factor of 2..."Energy efficiency has given us a factor of 2.8 in energy productivity since 1973 (42 years). And we're spending most of that by consuming more energy (see graph 2, above)..."<br /><br />If that's the text you want to write, shouldn't you have a graph 2 in which the quantity being tracked over time is higher in the present than it was in 1973?Jonhttps://www.blogger.com/profile/18246316232020910459noreply@blogger.com