> The thing is, if you can look at the evidence and yet say "we don't know" then you (in order to be consistent) have to admit that you basically "don't know" about anything that you don't have exact photocopies of the originals.

For most notable events in history we have much more evidence than just text. Caesars writings may not have the same scrutiny but we've got coins with his face on them from around Europe. Christianity had little impact on the world for the first couple of centuries.