Bookmarks for March 21, 2016 Tarot Cards | Complex Networks Tarot for understanding the 21st century. Tags: design, tarot, math, complexity How Many Decimals of Pi Do We Really Need? A NASA engineer explains the errors introduced by rounding Pi at various scales. More interesting than you think. Tags: science, math, pi, space Posted on March 21, 2016March 21, 2016 by Alasdair 0