Consider a parent, Maria, whose two-year-old son, Umberto, experiences speech delays. Maria is concerned that these delays indicate a developmental disorder. However, the pediatrician finds no signs of a developmental disorder, noting instead physical differences in Umberto's jaw and facial muscles and recommending a speech pathologist evaluation. An internet search on the topic yields an overwhelming array of sources, including blog posts, top-ten lists, advertisements, and advocacy organization recommendations. Distinguishing which of these sites are based on rigorous scientific research rather than subjective opinions is essential for making informed healthcare decisions.