I had been working as an IT-consultant, for some year. Where I often had to educate about APM products, and a lot of them was over skype to outsourced IT departments in Asia.

I could use a hole dag teaching them about the product, and how to use specific part of them. Even though I asked them if they understood everything I have said. I never got any questions or had to immerse anything.

But almost every single time after, I got a ton of email asking about everything I said. Why just why, would you just sit, smile and nod. If you did not understand anything. So I had to use days, going over the same presentation over and over again, to each and every participant.

Now I am so happy I gave the company the finger, and became a full-time developer instead.