1. When a machine learner / data miner tries to do networking Dave Musicant Carleton College

2. Intro CS Project: Create an Email Client Object Oriented Compelling Easy Modular Safe

3. Could something go wrong? Javamail ~2000 Email users across campus already Set up test server? Email server experienced trouble Couldn’t be us Could it?

4. Movie

5. Outcome It was us Combination of:  missing close statement  BlueJ(non-resetting JVM, c. 2002)

6. Comps Project (capstone) Build a web search engine, with a crawler What could go wrong? First, the names they gave it...

7. Comps Project (capstone): Search Engine Students named it... (not my doing!) Optimal Guesswork/Luck- Based Engine  OG/LE Streaker  (the crawler)

8. How to avoid repeat? Only one computer does crawling Test, test, test Review code Test servers, multiple layers

9. Outcome Web server went down Wasn’t us (I still maintain) Appeared otherwise