Listening to it now (thanks, +interesting). This is 1974 so predates the seminar for the OP book (1990) but it is definitely related. 'Thought as a system' is apparently Bohm's answer to the question of 'what is the root cause' of mankind's perplexity and misadventures ("stupified" per '74 audio), and this '74 is where they are asking this question.

"We're in a terrible mess because there has been 10,000 years of stupidity".

p.s. found it: https://www.youtube.com/playlist?list=PLAmzziUZMYuRIEeCImzmX...