It drives me nuts that I can't quite tell if that piece of tongue-in-groove (LOL) flooring is white oak, possibly varnished, or some sort of tight-grained pine.

Also, apparently Professor Hoadley was a really nice guy and [very well respected](https://www.finewoodworking.com/2019/11/26/from-the-editor-remembering-r-bruce-hoadley)