Conversation so far:
what was the goal of akhtar hameed khan's comilla cooperative pilot project?
The Comilla Model (1959) was Khan's initiative in response to the failure of a Village Agricultural and Industrial Development (V-AID) programme.
what were V-AID's failures?
V-AID remained a government-level attempt to promote citizen participation in the sphere of rural development.

Question: how was the comilla model different?
Self-contained rewrite: how was the comilla model different from a Village Agricultural and Industrial Development (V-AID) programme?