From 71dd202556dbd7deca07f9aff3602c53198ecc8d Mon Sep 17 00:00:00 2001
From: Bryan Andrews <andr1017@umn.edu>
Date: Tue, 7 Nov 2023 19:23:26 -0600
Subject: [PATCH] fixed error that was always forbidding all edges within each
 tier

---
 tetrad-lib/src/main/java/edu/cmu/tetrad/data/Knowledge.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tetrad-lib/src/main/java/edu/cmu/tetrad/data/Knowledge.java b/tetrad-lib/src/main/java/edu/cmu/tetrad/data/Knowledge.java
index d023bd4dc4..1dbef102a8 100644
--- a/tetrad-lib/src/main/java/edu/cmu/tetrad/data/Knowledge.java
+++ b/tetrad-lib/src/main/java/edu/cmu/tetrad/data/Knowledge.java
@@ -717,7 +717,7 @@ public List<KnowledgeEdge> getListOfForbiddenEdges() {
         }
 
         for (int i = this.tierSpecs.size() - 1; i >= 0; i--) {
-            for (int j = i; j >= 0; j--) {
+            for (int j = i - 1; j >= 0; j--) {
                 Set<String> tieri = this.tierSpecs.get(i);
                 Set<String> tierj = this.tierSpecs.get(j);