Brain size does not cap cognition
Bigger brains mostly add more of the same circuits: more neurons for finer sensory resolution, more storage, and parallel processing. They do not unlock new kinds of thinking.
The Mind of a Bee
6 ideas
Bumblebees learn to roll balls for reward
Bees were trained to move a ball into a goal to get sugar. Some learned it just by watching a model bee or a trained demonstrator. Observers often used a better method than they were shown: they picked the ball closest to the goal instead of the demonstrated distant one. This shows they grasped the goal of the task rather than copying the movements.
Bees roll balls for no reward
Bumblebees given free access to wooden balls rolled them over and over, with no food or other payoff. Younger bees did it more, and the balls became a sought-out resource. This fits standard behavioral criteria for play: voluntary, repeated, unrewarded and done in a relaxed state. It points to intrinsically motivated, possibly positive states in insects.
Bees show emotion-like states and possible sentience
After an unexpected sugar reward, bees judge ambiguous cues more optimistically, and a dopamine blocker removes this effect. Together these meet many behavioral benchmarks used to attribute feelings to vertebrates, so insect welfare deserves ethical weight.
Seeing through the animal's own senses
To understand an animal's mind, you have to rebuild its sensory world: bees see ultraviolet, sense polarized light and detect the electric fields of flowers. Flower colors evolved to suit bee vision, not human vision. Many claims that animals are stupid come from testing them on the wrong senses or with human-centered tasks.
Individual cognition versus hive-mind reflex
Chittka rejects the view of bees as reflex machines whose intelligence exists only at the colony level. Individual bees learn flower handling, route layouts, abstract concepts like 'same' and 'different,' and small numbers. They also differ consistently in learning speed and exploratory temperament. Colony performance is built on this individual flexibility and variation, not on identical automatons.