Please welcome Adrien Simpson. I'm sitting in my car, still in the parking lot of the company I walked into every morning for years. My hands are on the steering wheel, but I'm not going anywhere.I'm replaying the conversation with HR, hoping I misheard the words. Position eliminated. I pull out my phone, scroll through a long list of names, co-workers, classmates, conference contacts, people I barely remember even meeting.Hundreds, maybe thousands. And then it hits me. How can I know so many people and sti ...