JESS: (not (test ...)) vs. (test (not ... ))

[Mike Leiper]

I thought I read something about this before but I could not find it in the archives.

What is the difference between using (test (not ...)) versus (not (test ...)) in a rule:

Example
(defrule Rule1 "Rule1"
 (A (s1 ?x))
 (B (s1 ?y))
 (not (test (< ?x ?y)))
=>
    do something

Alternative

(defrule Rule2 "Rule2"
 (A (s1 ?x))
 (B (s1 ?y))
 (test (not (< ?x ?y)))
=>
    do something

These rules seem to evaluate the same. Is one method preferred over the other? Is
one more efficient? I want to make sure I'm using the appropriate method.

Thanks,
 

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