If you study navigation at the Coast Guard or a boating school, you are taught what is called Dead Reckoning or sometimes Ded Reckoning.

FORBES: DEDuced Reckoning is Assembling the Mosaic!

The old school thinking is dying or dead their future clients are online now not in the Yellow pages or in a flyer, print is dying this venue you and I share here is what will be used to expand and grow a small firm local or not .

FORBES: The Internet is Killing My Business!

But, police say, there was no activity on Kopetsky's cell phone after she walked out of school, indicating that the battery went dead or was removed from the phone.

CNN: Cold case: No signs of missing teen in recent search