My senior coworker with 30 years of experience has been a horrible person since I started. She loves to micromanage and enjoys making people feel dumb. She made 3 people leave within 3 months. Those 3 people were way more experience than me. I only have one year of experience. Anyway, I used to intern with some of the nation's biggest companies/organizations. My senior coworker make comments like “How do you not know this? You didn't learn it at the CDC? How about all those experiences at these fancy organizations?” She would say it with a smile. Sometimes these things that I do not know are just related to the organization itself. Then I recently made the same comment back to her ” You have 30 years of experience, how did you not know this?” She went to cry to my boss and he will have a talk with me next week.