As a long-time fan of high-level discourse and debate, I love this! Reminds me of https://www.intelligencesquaredus.org/.
Minor UI suggestion: When I opened it up to check it out, I clicked on a random dialogue (https://pairagraph.com/dialogue/b88167fd706941e8ac468283b51a...) to see what the deal was. I was very confused because it looked like just a short article - clicking around didn't reveal any kind of discussion anywhere. It wasn't for a few more minutes that I realized this was a multi-part debate where only one side had spoken. Something like "This dialogue will continue when Jason Calacanis responds" at the bottom of the article would have helped a lot. Heck, some kind of "notify me when he does" option would be super cool. :)