Each customer particle has a personal price sensitivity si. Every quarter it decides whether to buy from the "green" startup using a logistic adoption rule driven by brand trust R and the price premium:
P(buy)_i = 1 / (1 + exp(-(R/20 - k · premium · s_i)))
Brand trust follows a reputation ODE: genuine impact investment g raises it (with diminishing returns at low g), marketing without matching substance erodes it, and it decays slowly toward a neutral baseline without upkeep. This engine runs the exact per-quarter update used by the source model (a slightly richer curve than the simplified continuous form below — verified numerically to stay bounded in [0,100] across the full parameter range):
dR = α·g·(0.3+0.7·g) + α·g·growth·2 − β·(1-g)·growth·2.2 − γ·(R − R0)
An independent audit compares g against the marketing push: if the "greenwashing gap" (1-g)·growth is large enough (> 0.28) and the random scandal roll fires, trust takes a sharp penalty and disloyal customers scatter outward from the brand core — otherwise a forced audit gives trust a credibility boost. Green financing access is a weighted blend of current trust and the accumulated genuine-impact score:
F = clamp(0.6·R + 0.4·ImpactScore, 0, 100)
- Price premium — how much extra the eco-positioning charges; higher premium filters out price-sensitive customers unless trust is high.
- Genuine impact investment — the share of budget spent on real sustainability work rather than marketing; this is what an audit actually checks.
- Marketing / growth push — accelerates customer acquisition but, if not backed by real impact, widens the greenwashing gap and risks a scandal.
- Trigger Independent Audit — forces the scandal/credibility check immediately instead of waiting for the random per-quarter roll.
- Drag the radar view — rotate it horizontally, tilt it vertically (fakes the 3D orbit's camera angle), scroll to zoom.
This mirrors real eco-entrepreneurship: businesses built on genuine environmental impact earn durable trust and better access to green financing (ESG-linked loans, impact investors), while impact claims unsupported by real investment collapse under scrutiny.