Why is Richard Gage Appearing at the Royal Institute of British Architects?

If you ask Box Boy himself, I'm sure he'll natter something like because he has assembled explosive evidence that the towers were brought down in a controlled demolition. If you ask Gage's lackey and boot-spittle LeftWright, it's to make up for his appearing alongside Holocaust Deniers, Anti-Vaxxers and other crackpots at other venues along the way. If you ask the Royal Institute itself, it's because he paid them:

A spokeswoman for the RIBA said: “This event is a private hire of one room within the RIBA building, and is not affiliated with the Institute; the RIBA does not endorse, sponsor or publicise private events.”

But if you ask me, it's pretty simple: Because it impresses the rubes and they send in more money.