Cartagena, Colombia (CNN) -- Police dressed in black burst through a door, opening fire and rushing toward a man crouched in the corner.

CNN: Colombia steps up security for summit

After all, sometimes it's just about opening the door to get the newspaper in your bathrobe--and not worrying about running into Joe from sales.

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More over, the CPUC officially approved ridesharing -- where the drivers are not specifically licensed to drive a limousine or a taxi -- thus legitimizing Lyft and opening the door for others to offer such services in the future.

ENGADGET

"It does, " agreed Waxman, thereby opening the door to a line of argument in which he found himself suggesting--apparently in all seriousness--that U.S. citizens might have to purchase a government-issued, Maxwell Smart-like "cone of silence" before making a speech in a public park.

CNN: Free Speech On The Net At The Supreme Court

New technologies are opening the door for local brick-and-mortar retailers to connect with their customers in compelling new ways.

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Opening the door to new ideas and innovation requires taking deliberate steps to overcome the built-in brain patterns that lead us to automatically reject anything new.

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