Chakka, we've been down this road before, haven't we?
I mentioned in a post months ago in replying to you about your position (to which you are certainly entitled) that all known copies of all the Gospels (synoptic or otherwise) have always had the author's name attached to the Scroll (as has been the cultural norm since the earliest example), yet none have ever been found with other than the recognized authors. Additionally, the late date placement you suggest doesn't hold water for a number of reasons; the main, in my opinion, there are no references to the destruction of Jerusalem, known to have occurred in AD 70. You never replied and I let it go at that.
I'm also reminded that you hold no brook with any of the "Church Father's" (those that sat under the tutelage of the Apostle's in the mid to late first century) but scads of Phd.'s do and have written libraries defending their positions of early (some 'very early') dates for the production and defense of the currently recognized authors.
Lastly, the copies that are seen today (numbering well over 20,000 (in part or whole) came from areas far flung from Jerusalem. Considering that they are all nearly exact copies and their vast geographical locations of discovery, I'd suggest that they originated from only a few copies of the original letters and books.
One more thing... you state, in reply to Chris, that "...Paul's epistles (in which Jesus is first mentioned by anyone and where Christianity starts)..." doesn't reflect the fact that Paul knew Peter and James very well and had a face to face "Come to Jesus" moment in Jerusalem... kind of a mini-conclave, where a very important disagreement relating to how new converts (especially Jewish ones) were to be treated. Peter and James afterword agreed with Paul (all set forth in The Acts of Apostles). Luke would have been well known to Peter and James and had there been spurious, unfounded writings produced by Luke, Peter and James would have certainly called him out on it in their writings. Peter was also close friends with Mark and would have disputed his authorship had it not been a fact
I've never quite understood (forgive my denseness) why you berate all of the earliest witnesses to the authenticity of the writings (Eusebius, Papias, et al )... One example is from Papias "...‘This also the presbyter said: Mark, having become the interpreter of Peter, wrote down accurately, though not in order, whatsoever he remembered of the things said or done by Christ. For he neither heard the Lord nor followed him, but afterward, as I said, he followed Peter, who adapted his teaching to the needs of his hearers, but with no intention of giving a connected account of the Lord’s discourses, so that Mark committed no error while he thus wrote some things as he remembered them. For he was careful of one thing, not to omit any of the things which he had heard, and not to state any of them falsely..." (Source: Black, C. Clifton, Mark Images of an Apostolic Interpreter, Fortress Press, Minneapolis, 2001, p.92-94).
"Historian Edwin Yamauchi calls "probably the most important reference to Jesus outside the New Testament. "Reporting on Emperor Nero's decision to blame the Christians for the fire that had destroyed Rome in A.D. 64, the Roman historian Tacitus wrote:
"Nero fastened the guilt . . . on a class hated for their abominations, called Christians by the populace. Christus, from whom the name had its origin, suffered the extreme penalty during the reign of Tiberius at the hands of . . . Pontius Pilatus, and a most mischievous superstition, thus checked for the moment, again broke out not only in Judaea, the first source of the evil, but even in Rome..." (Source: Edwin Yamauchi, quoted in Lee Strobel, The Case for Christ (Grand Rapids, Michigan: Zondervan Publishing House, 1998).
Your turn...