This month, Leif will present Lesson 6 on Lazy Evaluation (http://www.seas.upenn.edu/~cis194/spring13/lectures/06-laziness.html) from Brent Yorgey's CIS 194 lectures.
Then, Rob Norris will talk about free things.
Meeting is on the 8th floor of the Tiffany Center. If you arrive before the meeting starts, there will be someone in the lobby to open the front door for you. If not, there will be a sign posted with a phone number for you to call, and someone will come down to let you in. Take the elevator on the right to the 8th floor, and exit to your right. The sign next to the space says Forge Portland. We meet in the large open area there.