This claim is untrue. The earliest start and finish times for each project activity are determined without performing a backward transit over the network.
In other words, the Early Start (ES) position of the first activity is set to zero when the calculation begins. To do the remaining calculations, apply the following formulas: Highest (or Maximum) EF value from the most recent Predecessor equals an early start (s) ES plus Duration equals an early finish.
Early Start: When an activity can start as soon as possible. The earliest time a particular activity can finish. The latest time that a task can start. the earliest time a particular activity can finish.
Learn more about Early Start (ES) position: https://brainly.com/question/29215742
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