 
     list = subscribers[simpleName]
 
-    if list is null
+    if not list
       subscribers[simpleName] = [subscriber]
     else
       # If iterating the list (during a publish), then do a copy-on-write.

  exports.fire = (stimulusName, memo, context) ->
    list = subscribers[stimulusName]

    return exports if list is null

    event =
      running: true

      responder = stimulusName
      stimulusName = ""

    [simpleName, namespaces...] = stimulusName.split '.'

    if simpleName isnt ""
      kullSubs simpleName, namespaces, responder
