I prefer the idea that intelligence is the broadest phenomenon which is the capacity for sensing the environment, processing information which is internally generated, and developing the capacity to take action based on the results of the previous two - in never ending iterations of feedback and generative possibilities. My position is that intelligence is a function of organisation - using both in their broadest sense. That is, the way that things are organised provides them with intelligence as a phenomenon and also with the particular possibilities of that intelligence. It has a great deal to do with patterns, making meaning, understanding and flexibility. Many innacurate but useful models will generally be worth more than one accurate respresentation.
Stupid entities are intelligent ones which are inhibited or thwarted in some way.
I start from the premise that the universe is intelligent or, at a minimum if that formulation doesn't work for you, that the universe is organised in a way that is a match for intelligence. More, it is a match for intelligences of many kinds, forms or varieties. That is, a bat and a bee also make sense of the universe they find themselves in and hence it is a match for their intelligences too. In this sense, organisations as entities are intelligent. Some possible measures of intelligence are capacities, processes, results, variety, etc.