Seven creatures with skills that easily beat humans

Knowledgeable people typically judge their abilities accurately, but the incompetent routinely overestimate their skill. This all-too-familiar glitch in our mental makeup is called the Dunning-Kruger effect. It's a failure of metacognition: the ability to gauge what you know and what you don't. Research suggests bees do not have this flaw. In a recent experiment led by Andrew Barron, associate professor in biological sciences at Macquarie University in Australia, researchers trained honeybees to determine which of two horizontal lines was above or below the other.