by Patrick Appel
Turns out it's neurological:
[Washington State University neuroscientist Jaak Panksepp] says that humans can get just as excited about abstract rewards as tangible ones. He says that when we get thrilled about the world of ideas, about making intellectual connections, about divining meaning, it is the seeking circuits that are firing. The juice that fuels the seeking system is the neurotransmitter dopamine.
The dopamine circuits "promote states of eagerness and directed purpose," Panksepp writes. It's a state humans love to be in. So good does it feel that we seek out activities, or substances, that keep this system arousedcocaine and amphetamines, drugs of stimulation, are particularly effective at stirring it.Ever find yourself sitting down at the computer just for a second to find out what other movie you saw that actress in, only to look up and realize the search has led to an hour of Googling? Thank dopamine.