The reason that EA has played a limited role with regard to sustainable
development is because methods to evaluate sustainability
were underdeveloped. In their study, Kim Hoseok et al. (2007) indicated
recommendations to link EA to SDIs as follows. First, a ‘linked indicator
framework’ method should be devised to connect the EA to sustainable
development and should be drawn up based upon SDIs. Second, the
‘linked indicator framework’ method should be used to assist with the
EA, and should take into account environmental uncertainties.