SAN FRANCISCO - Data logging is one of those things that is a lot older than many of us realize. "The most likely first method of data logging was hand logging the information in some written media, stone, bark, skins, papyrus, then eventually paper," said Bryan Welsh, P.E., of Welsh Commissioning Group (WCxG), Auburn, Wash.
"The Romans logged celestial activity and tried to predict future events," said Welsh, who was speaking at the National Conference on Building Commissioning. "The concept has remained the same from the beginning: record information regarding a physical property, analyze that information, then make predictions or draw conclusions from the patterns observed."