to join in an 'association', through which a group of farmers can acquire a better outcome, typically financial, than by going alone. This approach is aligned to the concept of economies of scale and can also be related as a form of economic synergy, where "two or more agents working together to produce a result not obtainable by any of the agents independently". While it may seem reasonable to conclude that larger the cooperative the better, this is not necessarily true. Cooperatives exist across a broad membership base, with some cooperatives having fewer than 20 members while others can have over 10,000. While the economic benefits are a strong driver in forming cooperatives, it is not the sole consideration. In fact, it is possible for the economic benefits from a cooperative to be replicated in other organisational forms, such as an IOF. An important strength of a cooperative for the farmer is that they retain the governance of the association, thereby ensuring they have ultimate ownership and control. This ensures that the profit reimbursement (either through the dividend payout or rebate) is shared only amongst the farmer members, rather than shareholders as in an IOF. As agricultural production is often the main source of employment and income in rural and impoverished areas, agricultural cooperatives play an instrumental role in socio-economic development, food security and poverty reduction. They provide smallholder farmers with access to natural and educational resources, tools, and otherwise inaccessible marketplaces. Producer organisations can also empower smallholders to become more resilient; in other words, they build the capacity of farmers to prepare for and react to economic and environmental stressors and shocks in a way that limits vulnerability and promotes their sustainability. Research suggests that membership in a producer organisation is more highly correlated with farmer output or income than other standalone investments such as training, certification, or credit. In agriculture, there are broadly three types of cooperatives: a machinery pool, a manufacturing/marketing cooperative, and a credit union. Machinery pool: A family farm may be too small to justify the purchase of expensive farm machinery, which may be only used irregularly, say only during harvest; instead local farmers may get together to form a machinery pool that purchases the necessary equipment for all the members to use. Manufacturing/marketing cooperative: A farm does not always have the means of transportation necessary for delivering its produce to the market, or else