 Fine-tuning arguments start from a conflict between two different perspectives on certain features of cosmology (or other physical theories). On the first perspective, the existence of creatures like us seems to be sensitive to a wide variety of aspects of cosmology and physics. To be more specific, the prospects for life depend sensitively on the values of the various fundamental constants that appear in these theories. The SM includes about 10 constants, and the particle physics standard model includes about 20  more.[48]  Tweaking the SM, or the standard model of particle physics, by changing the values of these constants seems to lead to a barren  cosmos.[49]  Focusing on the existence of “life” runs the risk of being too provincial; we don’t have a good general account of what physical systems can support intelligent life. Yet it does seem plausible that intelligence requires an organism with complex structural features, living in a sufficiently stable environment.