Reading the Harold Hezner book, I have discovered a interesting section about Gantt Charts limitations. Basically these are:
- Do not show the interdependencies of the activities, and therefore do not represent a “network” of activities.
- Cannot show the results of either an early or late start in activities. Do not represent the true project status because some elements are behind schedule do not mean that the project is behind schedule.
- Do not show the uncertainty involved in performing the activity, and therefore, does not readily admit itself to sensitivity analysis.
The perfect tool does not exist, so it’s important to know the limitations of the existing ones and extract all their strengths, isn’t it?
Nevertheless, of course Gantt charts are essential.