A Hacker News thread discusses a "Formal Mathematical Investigation on the Validity of Kellogg's Glaze Claims" regarding a sugary cereal not available in Europe. Commenters analyze the math, with some suggesting more complex approaches like the isoperimetric inequality. One commenter points out a potentially problematic ingredient, butylated hydroxytoluene (BHT), present in the cereal and questions the safety for children. The discussion also questions Kellogg's "perfect shape" claim for glaze delivery, with some arguing other shapes are superior. The thread also includes satire aimed at Kellogg's response and the broader issue of unhealthy, heavily processed foods targeted at children. A contrasting argument suggests spheres are best at minimizing sogginess. One user hilariously contends the older, flatter flakes were even better at glaze delivery and that the "donut hole vs. donut" debate is a distraction from the product's overall decline.