I think you'll find the SEO community to be pretty scientific.
Presumably it's Matt Cutts you're referring too - I'm pretty sure he's lied before about optimisations; Google after all don't want people to know all the details to avoid gaming the algos. If shared IP is a strong signal for low quality sites then it's to Google's benefit to avoid confirming that.
Presumably it's Matt Cutts you're referring too - I'm pretty sure he's lied before about optimisations; Google after all don't want people to know all the details to avoid gaming the algos. If shared IP is a strong signal for low quality sites then it's to Google's benefit to avoid confirming that.