I was talking to Karen about amplifier speakers. Specifically the development of alnico doing away with field coil speakers. Karen was enthralled.
To demonstrate that I was not pulling her leg, I looked up alnico on Wikpedia. Of course my explanation was right on point. But here is where this is headed. Sometimes the most interesting and unexpected information comes to light during the work of proving to your spouse that you not full of it.
Such as: Cow Magnet