private boolean missingColliders(Graph graph) {
List<Triple> colliders = getUnshieldedCollidersFromGraph(graph);
Graph copy = new EdgeListGraphSingleConnections(graph);
new MeekRules().orientImplied(copy);
if (copy.existsDirectedCycle()) return true;
List<Triple> newColliders = getUnshieldedCollidersFromGraph(copy);
newColliders.removeAll(colliders);
if (!newColliders.isEmpty()) {
return true;
}
return false;
}
