Feature Not Currently Available (another rant on my microwave)

I was attempting to heat an ingredient up to room temperature today (don't ask why), and I decided to use my "power level" feature on my microwave to turn down the intensity. So, I pressed the cook power button and was greeted in iridescent green letters with the message: "Power . . .Level . . .Feature . . .May . . Not . . . Be. . .Changed. . . At. . . This . . .Time." Excuse me? I'm sorry, I don't speak monophrasic complete sentence computer speak. I thought the most complex message my microwave could alert me to was flashing 12:00 to let me know the power went out while I slept. Instead, the contraption is somehow able to inform me that I am trying to use an option at an inopportune time. Do you mean to tell me it was easier to program my microwave to speak to me in complete sentences, than to let me change the power setting before I picked the time? Couldn't the thing just have given me three harsh beeps or something? I should have known I was in trouble when the thing told me to turn my food over mid-defrost.