Well, it looks like the root of all my previous problems is that some
properties of my definstanced objects can be null (for example, initially a
user may not have chosen a command, or a medical order might not yet exist,
etc...).
So, as I understood, instead of doing something like:
(Defrule
I think Alexander Lamb wrote:
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Well, it looks like the root of all my previous problems is that some
properties of my definstanced objects can be null (for example, initially a
user may not have chosen a command, or a medical order might
