"there are no signs at all that they are doing any live demonstrations."
When the FT journalist sounded sceptical and confused and consequently asked for a demo back along ( Jan I think the article was ? ) FG said he could either go to Italy or he would send them a video explaining it all. The FT journo said he would update the article when/if he received the video ( the same 3d graphics video - I don't know.)
Maybe they learnt from the Nashville discussions that they had trouble communicating the concept and so decided to create this 3d graphics video to help explain it to these crypto experts??