Dear M.R. Goode, I am so sorry that I pressed the wrong button and instead of publishing, I deleated your interesting comment which I'd like to follow up. Fortunately, I still had the text saved, so here it is,
M.R. Goode has left a new comment on your post "Marcion and the Dating of the Synoptic Gospels (St...":
I do not know what a "school" environment in Rome in the mid second century would have been like but a fellow Englishman named Ron Price proposed that all of the gospel accounts where designed on the concept of about 800 letter segments (or divisions of 800 count e.g. 1600, 2400) that fit on 1 page of codex. If something like that was true then it sure would tie in nicely with your theory that all accounts were written in near proximity to each in Rome under similar circumstances. I thought you would have a good feel for whether this is possible or improbable.