Two Internet pioneers dueled over whether proposed Net neutrality regulations supported by companies like Google and Amazon.com are the best way to prevent "abusive" behavior by broadband providers. A debate here hosted by the Center for American Progress, a nonpartisan research institute that brags of challenging "conservative thinking," pitted Google Chief Internet Evangelist Vint Cerf, who co-developed the Internet's backbone protocols and has emerged as a leading proponent of congressional antidiscrimination mandates for network operators, against Dave Farber, a Carnegie Mellon University computer scientist widely considered to be a "grandfather" of the Internet.