Nancy Pearl's Rule of 50

To preserve the copyright, here is the reference.
http://seattletimes.nwsource.com/html/localnews/2001952705_nancypearl10m.html

And because I'm a little geeky, here is the C-style pseudocode. (Truer geeks than I would use ML, Lisp, etc.)
if(age <= 50){
required_min_pages = 50;
}
else{ // age > 50
required_min_pages = 100 - age;
}