Exponential growth

[Richard O'Neill]

On 1/8/2013 11:09 AM, Andre Kesteloot wrote:
> Apparently, American (native) Indians, when they moved in group, would 
> task one of theirs to look backwards from time to time, in order to 
> memorize the view that they would to need to see to be able to return 
> to their village. 

  Yep, I've practice that technique when hiking in the wilds and when 
hunting in unknown regions. It's helped me return to my camp/car more 
than once. These days I still practice it but also carry a compass and 
GPS, just in case. ;-)   BTW, the old trick of reading moss around the 
base of trees to locate north on overcast days isn't all that reliable. 
Moss grows everywhere! =-O