Shallow Water Walker Posted over 1 year ago Seth Shostak: ET is (probably) out there -- get ready So it's not a log-log gimmick because being exponential to begin with is startling in and of itself? Why? We see exponential growth in many situations. So what is startling about it? Also, I see no line with a slope of 0.62. For the scatter plot in the link you provided, the approximate slope is much closer to 1 than 0.62. Using the data given for Sagan, the slope of the best fit line is near 0.94. If the slope was close to 0.62 then the upper-left corner of the scatter plot would be closer to 10^6. So what exactly are you talking about? I have questions for just about every sentence/phrase in your post, so I'll summarize by saying that it reads sloppily and I am confused on what you are trying to say.