Because all I saw was an image of a protractor overlaid on the map. We get it already, 23 degrees.
"After some research of his own into this, Don found that the avenues leading off from the White House are at this angle and sent me an image. "
By rersearch, you mean looking at the map with a protractor? Some research of his own- right. It does not appear to have extended to learning the names of the streets in the map, as witnessed by this recent post by that 'researcher'.
"By the way which street is New Hampshire ?"
Did he really ask you in front of a crowd which of the streets in the DC map is named New Hampshire. And he is the one that turned you onto the angles in the plan?
"My own theory is that the Great Pyramid contains information about the earth's axis and its geophysics, and this means precession - and perhaps because precession is a 'post-cataclysmic phenomenon'. In other words, it contains information about the present condition of the planet and that possibly we are meant to see that this present condition is the result of a global catastrophe in the distant past which ended the 'Golden Age' of an upright axis as geophysicists Allan and Delair suggest, and which nearly wiped out the human race."
And this is a clear statement of your thesis? I presume that you add one more clause, that being that since the DC map has 52 and 23 degree angles, it too "contains information about the earth's axis and its geophysics, and this means precession".
Did I mention that Jefferson was not a Congressman when he and L'Enfant worked on the map plan 'together- he was the Secretary of State.