Digital BW, The Print

This group was discussing different types of ink.  I recently read 
on the Epson web site that their inks would last 92 years.  This 
seems optimistic.  Will third party inks last as long?  I am told 
that various types of photo rag paper is archival.  How many years 
is archival?  I realize that my questions are probably pretty 
elementary but I am just beginning to move from the darkroom to the 
ccomputer.  Thanks,

Perry