I won't stop what I'm doing to answer the phone, to have a conversation, to answer a question, etc. if I'm in the middle of taking a gun apart or putting it back together. Everyone knows that , and leaves me alone.
I was interupted once, and then went back to cleaning a gun, thinking I had cleared the chamber...... it wasn't cleared. I swore that would never happen again... and that's the reason I do what I do.
I almost "dry fired" it , then the thought hit me to check the chamber "one more time" ... so I stopped to check the chamber "one more time" . ..... good thing I did.