The document discusses five big ideas for reshaping project delivery using lean principles:
1. Collaborate really collaborate by finding common purpose and aligning rewards through all phases of design, planning and execution.
2. Increase relatedness among all project participants through building relationships and listening to create coherent teams.
3. View projects as networks of commitments where coordination happens through conversations to make and keep commitments.
4. Optimize at the project level rather than subcontractor or task levels by pursuing planning reliability before productivity and organizing in cross-functional teams.
5. Tightly couple action with learning by designing work for learning through experimentation, feedback, and analysis to continuously improve.