Pearl’s system is not ad-hoc. It is very not ad-hoc. It has a metric fuckload of math backing up the simple rules.
Thomblake’s observation may be that while Pearl’s system is extremely rigorous the diagrams used do not give an authoritative standard style for diagram drawing.
Thomblake’s observation may be that while Pearl’s system is extremely rigorous the diagrams used do not give an authoritative standard style for diagram drawing.
That’s correct—I was looking for a standard style for diagram drawing.