About a dozen students showed up in Scheme-themed Halloween costumes to the Oct. 30 Structure and Interpretation of Computer Programs (6.001) lecture. This is the last semester that 6.001 will be offered. Michael McGraw-Herdeg—The Tech May. 9, 2016 Facebook Twitter Reddit Print About a dozen students showed up in Scheme-themed Halloween costumes to the Oct. 30 Structure and Interpretation of Computer Programs (6.001) lecture. This is the last semester that 6.001 will be offered. Michael McGraw-Herdeg—The Tech