Tsundoku ? Part 2

Following on from yesterday's blip , here is the stack of non-fiction books I have bought intending to read.  These probably better qualify for the title Tsundoku as some have been there for some time e.g. I bought the the Celts and Picts one last October following our trip to France; others are newer and being read first e.g Humankind.  I guess I am operating a last in first out principle here :-).

In any event I feel I should be reading more non-fiction (and possibly less social media) so in addition to working my way through my fiction stack I also plan to read at least one fiction book a month.