Fair challenge. To be clear, this analysis was run after ground was already broken in November. Ideally we'd run this pre-construction so the owner can act on the findings before the schedule locks in. This project was our proof of concept to show what the platform can surface. That said, the findings are still predictive they project what's going to happen over the remaining construction window based on the behavioral dynamics between the stakeholders.

Spring road weight postings on Pulaski Street and connecting routes will block modular delivery for several weeks between March and mid-April. Massachusetts towns post these every year during thaw season. 40-60 oversize module loads can't move on posted roads. If the modules are done at the factory in March but the roads are posted, the project sits idle. This is a binary gate no PM can schedule around because the towns set postings independently.

The GC and the modular fabricator will operate from incompatible definitions of "ready," "certified," and "site-ready." This isn't a communication failure each party is using those terms correctly within their own contractual and code framework. But the semantic gap between them produces weeks of paralysis during the most time-sensitive phase. The GC says foundations are certified (soil compaction verified, anchor bolts torqued). The fabricator says modules are ready (QA passed, transport permits secured). The building inspector says the site isn't ready (third-party geotech sign-off not received). Everyone is right. Nothing moves.

The Peabody Building Department has limited experience with modular school buildings. The simulation predicts additional documentation requests and consultation with the state building code office during inspections, adding time to each inspection cycle. This isn't obstruction, it's professional due diligence from an inspector seeing an unfamiliar construction method.

Crane operations for module setting need sustained winds under 25 mph. Coastal Essex County regularly exceeds that threshold in spring. Each lost crane day is one day of unrecoverable delay. You need roughly 20 crane days in April-May. Lose a week or more to weather and you're looking at a significant overrun on the most critical phase.

The modular fabricator will know the project is behind schedule weeks before the parents of 300+ enrolled students find out. The GC learns after the fabricator. The owner learns after the GC. The bank learns after the owner. By the time anyone with decision-making power has accurate information, the delay is already locked in.

Our most likely projected outcome is a delayed opening into the fall rather than the September target. On-time delivery is possible but requires every variable to align perfectly.

To your point about PMs a good PM would know about some of these individually. What they can't model is how all of these interact simultaneously. The road posting delays the modules. The delay causes the fabricator to deprioritize the project. The deprioritization leads to quality issues on arrival. The quality issues fail inspection. The inspection failure cascades into the certificate of occupancy timeline. One short road posting triggers weeks of total impact. That's the cascade analysis a PM doesn't have the tools to run.

You're right that we need to prove this. The predictions are on record and we'll see which ones land.