A footnote on take home exams

I suggested in a post below that take home exams, if we are going to continue to offer them, could become a graver exercise if they were centrally administered using standard software, which would limit the time available for a student to complete the exam. It turns out that software already exists. The Registrar uses it to administer placement exams, which freshmen now take before they arrive in Cambridge. So all that needs to be built to implement my suggestion is a policy change.