I think I might see what you mean.

I don't want to argue about the priors for 1-3 specifically. Such arguments generally devolve into unproductive bickering about the assignment of the burden of proof. However, priors for arguments about specific historical events, such as the location of the podium from which the speeches were delivered at Gettysburg, are known to be of ordinarily-small levels, and most evidence (e.g. written accounts) are of known weak strength in particular predictable ways*. In fact, I mentioned Gettysburg specifically because the best-guess location changed relatively recently due to new analysis of the written evidence and terrain. In pure terms of my own curiosity, therefore, I anticipate more interesting discussion on 4-6 than 1-3, as nick012000's evidence for the latter I expect to be wrong in familiar ways.

* cf. Imaginary Positions - rounding to the nearest cliché is a standard failure mode.