—then, in that case, they can't go.... It's a prohibitive factor. It's pretty rare in legislation to see a prohibitive factor that says “you shall not consider this”, and that's what this says. In that case, it's simply something that, on its own, ought not to be considered. In other words, all things being equal, you just can't look at that factor if there's nothing else you can hang your hat on.
On February 25th, 2019. See this statement in context.