Question

Having too many life cycle phases may be detrimental because

Answer 1

Having too life cycles can be detrimental because the project manager is very likely to spend most of his/her time preparing for gate review meetings instead of managing the various phases of the project.

Gate reviews help in analyzing whether the project is ready to move to the next phase. So, if there are many life cycles, there will be too many gate reviews. This results in more of analysis of each phase of the project rather than progressing into and managing the next phase.