Letter to the Editor—Comments on a Paper by Thomas Healy

Published Online:https://doi.org/10.1287/opre.9.6.909

In the May–June issue of Operations Research, Thomas Healy presents findings which he uses to demonstrate that a prescribed subdivision of activities will change probabilities in a PERT network analysis [“Activity Subdivision and PERT Probability Statements,” 9 341–347 (1961)].

As a member of the original PERT team, I would like to call attention to and take issue with some aspects of his paper.

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