Implications of the ATSI models are as follows: (1) individual levels of sustainability are presented in a diagram; (2) the level of sustainability is represented by quantitative data; (3) the quantitative data may be obtained by primary or secondary sources; (4) the sector of the sustainability scale is clearly defined with numerical sources; (5) four types of sustainability gradations (ATSI1–4) are suggested; (6) in the process of data gathering and analysis, a holistic (systemic) and reductionist approach are adopted; and (7) the larger the AMOEBA, the more sustainable is the system, while the smaller the AMOEBA the less sustainable the system.