Discussion with the paper ‘Project costs planning in the conditions of uncertainty’ by H. Štiková

https://doi.org/10.17221/51/2014-AGRICECONCitation:Krejčí I., Houška M. (2014): Discussion with the paper ‘Project costs planning in the conditions of uncertainty’ by H. Štiková. Agric. Econ. – Czech, 60: 517-523.
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In the paper, there is analysed one particular approach to the modelling uncertainty in the project management through an original version of the fuzzy CPM (Critical Path Method). First there is shown the relevance of using the fuzzy CPM in agriculture and the related branches and present the basics of the methods used. Then, there are described the imperfections of the work which is discussed and the impacts of the previously-published approach when applied in project management practice are emphasised. In the original paper, the author uses only the discrete fuzzy numbers for activity time durations which could be considered inappropriate for the time scheduling in project management. Consecutively, the direct application of the extension principle on the comparison of continuous durations could lead to the situation when both numbers can be greater than the second one with possibility equal to one. Moreover, the simple transformation of durations to the costs by linear equations with a positive slope does not respect the current project management theory and practice. Finally, the missing comparison of project fuzzy costs among individual variants of the project is calculated.  
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