Mark, The bacteria example is one that Dr. Bartlett uses in his lecture. Good example.
I do take offense to the texting issue, if Governor Perry thinks it's OK to text while driving because he doesn't want government involved in a person's day to day business, Therefore, it must be safe for the non-texting public. LOL. Geary -----Original Message----- From: Mark Minton [mailto:[email protected]] Sent: Monday, August 08, 2011 11:08 AM To: [email protected] Subject: RE: [Texascavers] where a man can breathe free, and relevance to caves At 10:06 AM 8/6/2011, Geary Schindel wrote: >Couple of interesting facts from the video. Bartlett talks about >the rule of 70 for doubling of exponential growth (any growth over >zero). That is, take the yearly growth rate of a city, say San >Antonio at approximately 2.8 percent and divide that in to 70 and >you get the doubling rate. That is, in 25 years, the San Antonio >area will double its population to around 4 million people. A useful way to look at this type of population growth is to consider a bucket of bacteria that doubles in whatever time span. Up until the bucket is half full they can look around and say there's no problem; we have plenty of room. Then all of a sudden the bucket goes from half to completely full in one generation. It can happen before you know it. >I believe that we have way too many people on the planet and >anything we can do to eliminate some of the dummies, I'm all >for. That is why I'm opposed to mandatory seat belt laws, child car >seats, texting bans, and helmet laws. If you aren't smart enough to >do these things out of common sense, you probably shouldn't be reproducing. The trouble with some of that logic, like texting bans, is that the perpetrator can easily survive the accident while the innocent bystander who gets crashed into may die. There's no protective logic in that one. Mark Minton Please reply to [email protected] Permanent email address is [email protected] --------------------------------------------------------------------- Visit our website: http://texascavers.com To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected] --------------------------------------------------------------------- Visit our website: http://texascavers.com To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
