You are a developer when you check email in the middle of the night, feel disconnected without your computer, and decide to go back to college for the free internet access. Typical developer behaviors also include typing ".com" after periods, laughing at people with slow modems, using emoticons in emails, and knowing technical details but feeling comfortable admitting "I don't know" when asked a technical question. Developers also prioritize learning about new technologies over other activities and own specialized computer tools.