Caz - a bit of a waste of space that post! No-one, I believe, is disputing that they hit a cloud covered hill, not that the visibilty at the crash sight was virtually nil.
What
is in dispute is
a) It is NOT thought they were in fog at waypoint change
b) Why they carried on on the track they did towards worsening weather.
These witnesses were at various points on the Mull and at various altitudes above Sea Level.
So, now PROVE they consciously and deliberately flew IMC towards the hill from waypoint change - BEYOND REASONABLE DOUBT?
Not even W&D know the answers to b), hence the whole thrust of Brian's and others' campaign.