Eco-capitalism is one of several strategies of the green movement and Green Parties. Its central idea is that capital exists in nature as "natural capital" (self-renewing productive ecosystems that have a measurable ecological yield or tangible benefit to humans) on which all wealth depends. Other forms of capital that are created by humans (like infrastructural capital and financial capital) simply extend and optimize this natural capital with creativity, training and trust. In this view: Nature's services are the base of a service economy - so interfering with nature's services destroys rather than creates value, and must not be rewarded with assistance or subsidies from the state. However, other than that, competition between humans is thought to be inevitable and an effective way to or