Scents and sensibility

“Dr [Stuart] Card, a cognitive psychologist, reckons that a user ‘forages’ through a website in search of a piece of information in a manner similar to that employed by an animal foraging through a forest in search of food. Watch the user’s foraging behaviour (his ‘clickpath’) closely enough, and you can work out what ‘scent’ he is chasing, and thus what kind of information he is after.”