The earliest known people in the Caribbean are the Taino indians

New Amsterdam

Adam and Eve

In Critical Path Analysis using precedence diagrams (showing activities linked by logical connections/constraints e.g. Activity A must happen before Activity B), then the Earliest Start (Earliest Event Time?) is the earliest time that that activity can start according to the logical constraints of the precedence diagram and the constraint types (Finish to Start, Start to Start, Finish to Finish or Start to Finish).

The earliest known computing device, the Antikythera Mechanism, dates back to about 100 BC. It is mechanical and analog, it is believed to have done astronomical and navigational calculations.