try to clarify all() docs a bit more

lib/Type/Junction.pod

@@ -66,9 +66,11 @@ produce an empty list:
 
     my @a = ();
     so all(@a) # True, because there are 0 False's
-    so all(@a, ?@a) # Does what you might have meant by the above
-    so all(@a, True) # Explicit way to express the first example
-    
+
+To express "all, but at least one", you can use C<@a && all(@a)
+
+    say so @a && all(@a);   # False
+
 Negated operators are special-cased when it comes to autothreading.
 C<$a !op $b> is rewritten internally as C<!($a op $b)>. The outer
 negation collapses any junctions, so the return value always a plain