That's a good point. But for a lot of people it's not even a problem to do that in front of your co-workers who you work with on a daily basis. Even when I had

That's a good point. But for a lot of people it's not even a problem to do that in front of your co-workers who you work with on a daily basis. Even when I had to work with customers, I had zero problems talking to them, getting requirements, and figuring things out. If I had to land that customer for the business, I would surely botch it. That's why I didn't go into sales. I think that the difference is you have much higher stakes in an interview. If you make a mistake with a co-worker or customer, you can usually just go back and fix it. If you make a mistake in your interview, it can cost you the job and it's not so easy to go back and fix.