They're not "just guessing"


[Follow Ups] [Post Followup] [Dodge Power Wagon Forum]


Posted by David Sherman on Friday, January 02, 2009 at 00:47:16 :

In Reply to: Re: 50,000 years or so overdue to blow posted by Arthur P. Bloom on Thursday, January 01, 2009 at 13:48:00 :

It's pretty easy to date rocks by various radioisotope clocks. But when good scientists state numbers that are uncertain, they don't put in more digits than they have good reason to believe are valid. If a geologist says "600,000 years ago" he probably means +/- 50,000 years, that is, closer to 600,000 than to 500,000 or 700,000. Given that all of human civilization has happened in the past 5000 years, a disaster that's pretty sure to happen sometime in the next 50,000 years is not a big risk.



Follow Ups:



Post a Followup

Name:
E-Mail:
Subject:
Message:
Optional Link
URL:
Title:
Optional Image Link
URL:


This board is powered by the Mr. Fong Device from Cyberarmy.com