The book "Influence of Bugs on a Software Project" by Sadhna Goyal offers a comprehensive analysis of the impact of software bugs on the development process. It is generally accepted that the costs of fixing bugs increase the later they are discovered in the development cycle. This work presents a simple yet effective cost model for estimating bug-fixing costs, applicable at any stage of software development. The author emphasizes that many costly bugs stem from specification deficiencies that are only identified during the functional testing phase. This highlights the need to integrate quality assurance throughout all phases of the development process rather than confining it to a single phase. The book is aimed at anyone involved in software development who wants to minimize bug-fixing costs and adhere to project timelines.