Information inspires action. If you want a live demonstration, look at a 3D printer. The technology and its applications are all relatively young. But despite that, the promises it’s been making range from cheap parts manufacturing to actual body parts.
Then again, this same analogy can still apply to its ancestor: The paper printer as well as all the way to the very first printing press during the Middle Ages.
Because for all they’re worth, a printer is just really a block of metal parts. It takes information to guide it. Likewise, your sales leads dictate the real actions of real salespeople regardless if the lead source was digital or in print.