Tunnelling is complex and specialised, demanding high engineering expertise through planning, investigation, design and construction. Safe construction depends on investigating the ground and site properly by engineering means before construction and interpreting the findings correctly. Designers should obtain or be given all relevant information, be told of gaps in it, take part in collecting data for the site investigation and be involved on site during the investigation.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.