5. The Evidence for the Theory is Irrefutable ==>
   5.1. Direct Evidence ==>
     5.1.1. Fossil Evidence ==>
       5.1.1.8. Age of Fossils * ==>
         5.1.1.8.3. Radiometric Dating* ==>
           5.1.1.8.3.1. Methods of Radiometric Dating* ==>

5.1.1.8.3.1.2. Tutorial on Radiometric Dating
*(One does not have to understand anything presented on this page.
The point is, there ARE people who DO understand this
AND it is FUNDAMENTAL to their discipline).