3. Methods for assessing the value of an environmental good or service

However, when it comes to quantifying the importance of the environment, environmental players can find themselves at a loss.

"Indeed, the following questions arise:

• how can we comprehensively evaluate all the goods and services provided by the environment?

• how can we quantify the potential losses incurred should we lose this natural capital?

• how can we quantify the loss of this natural capital as a result of one or more human activities?

• how can we assess this loss due to human activity over time?

There are no immediate answers even from environmental experts" (Issaka Dialga – 2016