flowchart LR
    A["Project schedule slips<br/>A manager's intuitive reaction:<br/>add more people"] --"Training overhead,<br/>communication explosion"--> B["Temporary drop in productivity<br/>Existing team's focus declines"] --"Short-term worsening,<br/>possible mid/long-term recovery"--> C["The project is delayed<br/>further, or quality drops"]

    style A fill:#E3F2FD,stroke:#1976D2,color:#000
    style B fill:#FFF3E0,stroke:#F57C00,color:#000
    style C fill:#FFEBEE,stroke:#D32F2F,color:#000
  

    flowchart TD
    ADD["Add n new people"]

    subgraph R1["　"]
        direction LR
        M1["Training/onboarding cost<br/>Existing team members must teach<br/>the domain and codebase<br/>→ existing team productivity drops"]
        M2["Communication explosion<br/>For an n-person team, the number<br/>of channels grows as n(n-1)/2<br/>→ meeting/coordination cost spikes"]
    end
    subgraph R2["　"]
        direction LR
        M3["Limits of division of labor<br/>Work that must be done sequentially<br/>cannot be split up<br/>→ parallelization gains are limited"]
        M4["Increased integration complexity<br/>More code/modules require<br/>integration, testing, and review<br/>→ late-stage overhead grows"]
    end

    ADD --> M1
    ADD --> M2
    ADD --> M3
    ADD --> M4

    style ADD fill:#1E3A5F,stroke:#1E3A5F,color:#fff
    style M1  fill:#FFEBEE,stroke:#D32F2F,color:#000
    style M2  fill:#FFF3E0,stroke:#F57C00,color:#000
    style M3  fill:#F3E5F5,stroke:#7B1FA2,color:#000
    style M4  fill:#E3F2FD,stroke:#1976D2,color:#000
    style R1 fill:none,stroke:none
    style R2 fill:none,stroke:none
  

    flowchart LR
    subgraph R1["　"]
        direction LR
        S1["Staff up front<br/>The best approach is to secure<br/>enough people during early<br/>planning/design"]
        S2["Prefer scope adjustment<br/>When schedule slips, consider<br/>reducing feature scope (MVP)<br/>before adding people"]
    end
    subgraph R2["　"]
        direction LR
        S3["Modular design<br/>Design architecture/work split<br/>so work can proceed in parallel,<br/>as independently deployable units"]
        S4["If unavoidable, plan onboarding<br/>Before adding people, plan onboarding,<br/>assign mentors, prepare docs<br/>and accept short-term productivity loss"]
    end

    style S1 fill:#E3F2FD,stroke:#1976D2,color:#000
    style S2 fill:#E8F5E9,stroke:#388E3C,color:#000
    style S3 fill:#F3E5F5,stroke:#7B1FA2,color:#000
    style S4 fill:#FFF3E0,stroke:#F57C00,color:#000
    style R1 fill:none,stroke:none
    style R2 fill:none,stroke:none