Why it is important for Electro Instrument & Telecom (EIT) engineers to be involved from the very beginning of an engineering project?

An engineering project is usually performed in 3 phases. The 3 phases are 30% – 60% and a 90% milestone reviews of the 3D model. These percentages (30% – 60%-90%) reflect a percentage of completed project, not a percentage of maturity of each discipline. For EIT’s part, we can say that we are usually about 30% finished when a 60% review is held, depending on how extensive the EIT contract is. So, what does this mean?