One of the instruments used for testing had stopped working and I had become very frustrated because of all of my unsuccessful efforts at trying to fix it. I couldn’t find what the problem was. And even though Professor Shahriyārī had been martyred, I said, “Dear professor, what kind of supervisor are you who doesn’t help [a student in need]!” At that very moment my hand hit a switch and the device started up! I was stunned. I could not believe that the device started up so simply [after all my previous efforts had failed].