I am not the only media person around today. A film crew is setting up in Langer’s office; he puts on a jacket (his black jeans and brown shoes are out of shot) and starts answering questions about his achievements. It’s an educational video for the website of the Charles Stark Draper Prize, a US$500,000 award sometimes called a Nobel prize for engineering. Langer won it in 2002. The woman organizing the shoot told me that some of the other winners were impossible to pin down, but Langer was hap
