3 ms·Because right now we have a system that works. Email the author. I've ALWAYS gotten a response.by rubidium 10y agoBecause right now we have a system that works. Email the author. I've ALWAYS gotten a response.arcanus 10y agoI think email (private communication) will always be useful. However, some general questions being publicly available would be also arguably have utility.curt15 10y agoThere are already established forums for discussions, like mathoverflow.