Today I found out over on Bob's weblog that Bill Kent passed away in December, aged 69.
Kent deserves to be better known in my opinion. His book "Data and Reality" is a classic of its kind and turned on a whole bunch of light bulbs for me when I first read it.
It was in Kent's book that I first came across the deep intertwinglements between spoken language and the conceptual models that software architects build in their heads. A concept I wrote about in the ITWorld article How to Model a Bishop some years back.