The witnesses might just confirm that.

Mention was made in some media reports that Facebook executives used to communicate with each other and then delete or wipe messages from their internal messaging within Facebook Messenger. Is that available publicly? Can it be made available? Why was it only available to executives? What kind of information and messages were being deleted? What was this tool about?

Facebook is a very successful corporation and a very successful application as evidenced by its take-up and user base and the pace at which it has grown. Many apps and platforms have developed for it and it has been embraced by users to the point where it has become a 24/7 feature of most people's lives. Political advertising and issue-based discussions are very much part of that. Controversies, threads and arguments are part of the whole package. It is hard to understand, given the resources, data and knowledge available to it, that Facebook did not know about Russian interference in the US elections, Brexit and, as we saw on Channel 4, other processes around the world. How is that credible? It is hard to believe Facebook had no inkling that any of this was going on. I would like to believe it, but it is hard to credit that Facebook was in complete ignorance of these activities and only found out when Channel 4 did some digging around and came back to tell it what had been happening on its platform for the last number of years. It is hard to take that at face value. I would appreciate some response to that.