Human beings don't want to just enjoy something by themselves. They want to share that emotion - they want everyone around them to enjoy it like they enjoy it or hate it like they hate it. That's what makes a video spread.
“Look at the product pipeline, look at the fantastic financial results we've had for the last five years. You only get that kind of performance on the innovation side, on the financial side, if you're really listening and reacting to the best ideas of the people we have.”
“Of all the species of literary composition, perhaps biography is the most delightful. The attention concentrated on one individual gives a unity to the materials of which it is composed, which is wanting in general history.”