I had a really enjoyable time at the Data Science Meetup at the Mozilla Toronto office where about 40 of us gathered to network and have technical discussions. Christopher gave a talk on selecting an optimization objective, which was more of a general lecture. Many of us were already familiar with the basics of machine learning, but nevertheless, the Q&A session was quite informative and the lecture was interesting. Afterwards, a whole bunch of us left for drinks. I got to meet some really intelligent people in the meetup. Overall, it was an evening well spent and I'm looking forward to our next meeting.