Here are the assignment for your HW2. Please check out your assigned project's wiki page and run the prototype. You don't have to do your heuristic evaluation right away, but poke around a bit and make sure the prototype appears to work for you.
If you have any difficulty getting a prototype to run or finding a suitable platform to run it, send email to the people who created it, and cc: 6831staff@csail.mit.edu on your email. Do this trial run by Wednesday, April 13. We need to get logistical problems out of the way as early as possible.
...