Challenge is good in my opinion. I also like to be challenged on any fields but IT work flow and my logic structure.

There’s someone called me and asked if I get the email he sent yesterday. (well, I was going to answer him "I didn’t…") then he said "well, maybe you deleted it…balabalabala…."

Hey guy! I never delete email of my company email-box, and also I organized my email category policy for easy-searching in my way. Discuss with me about your issue, but DO NOT challenge me on your imagine, please!!