I understand that, of course. What I mean is, although particular CofS's have their individual views, the plan selected must be influenced by factors other than mere personal preference. What data passing across Moltke's desk would be sufficient to convince even him that the plan for attack in the west needed to be abandoned?
"Answer Hazy Ask Again Later."
We really don't have access to everything that Moltke the younger did to shape his decisions and can only guess. My admittedly WAG is that after 1910 the Germans become convinced that the Austro-Hungarian military can't be trusted at all and they didn't think much to start. So to help AH requires a major deployment east. That could work.
The military to be given some firm direction from the civilian leadership I.E. Wilhelm has to put his foot down or be prompted by the Chancellor and be told the diplomatic costs of going through Belgium would be too high. Military expected both England and Belgium to be hostile in any war.