it's from 2345 days ago, which is < 7 years and I'm guessing it had a reasonable lifetime after that anyway - how come you're thinking that it's > 7 years old?
And my point wasn't so much about the actual algorithm either, just that sometimes a pinch of Google = a dollop of calculus :)
Maybe if all of us ask him nicely?
Security by obscurity is bad practice if that's your only layer of defense but it certainly doesn't hurt as one of the layers in your onion.
Honestly the argument "there are bad people, we need to worry about them" is getting tired. It was cool when pg was showing off Arc to the community. It felt like we were all discovering something new, and how to build a community together.
A person trying to game the front page could get all kinds of useful info from there. For instance how the flame detector and voting ring detector work and what penalties exist and when they trigger. The ranking algorithm is a lot more than a simple formula.