Active noise cancellation. It’s a bit like magic. Don’t be a wanker and say “Um actually, all you have to do is emit an inverse waveform.” I think it took a hell of a lot of work to get this right, especially integrating it into relatively inexpensive consumer devices. Thanks, scientists and engineers. Well done.
I think it’s fine if Microsoft has their own nuclear power plant as long as every Microsoft corporate officer is required to live downwind of it. ✌🏻