"Create a game economy model for a city builder with two parallel progression paths. Inputs: Source 'Citizens' that automatically generates 1 unit every 30s. Source 'Wood' where Citizens are assigned to produce 5 units per cycle. A Pool 'Marble' (Tier 1 Special Resource). The Dual Path Logic: Create a Choice Gate after Tier 1. Path A (Wine): Spending Wine increases the 'Citizens' generation rate by 20% (Positive Feedback Loop). Path B (Crystal): Spending Crystal increases the 'Wood' production efficiency by 20% (Production Buffer). Goal: Both paths must converge at 'Expansion 2', which costs 1000 Wood. Balance the rates so both paths reach the goal in approximately the same time (10 minutes). Avoid deadlocks by allowing a small conversion rate of Wood to any Special Resource."
