Probably best not to circumscribe 'intelligence' even if the ant example is as you suggest. What is planning, forethought or central driving? Braitenberg nailed

Probably best not to circumscribe 'intelligence' even if the ant example is as you suggest. What is planning, forethought or central driving? Braitenberg nailed this back in 1986 in his book Vehicles in which he describes simple toys showing 'increasing intricate if not always successful or civilized behaviour'. See chapters (vehicles) on 'Foresight', 'Egotism' and 'Optimism'. https://en.wikipedia.org/wiki/Braitenberg_vehicle https://en.wikipedia.org/wiki/Braitenberg_vehicle