You're probably right, Jeff. I guess the monotony of compiling facts, and putting them into lists, causes a level of brain-rot, and "slipping one in" probably keeps a compiler sane.
OR---The person entering the text did nothing more than run it through spell-check.
Since "Stack", "1961", and "Woodcock" are legitimate words, they passed, even though they were wrong. That is one problem advanced technology has brought us---thinking spell-check is enough proofreading, and then not actually re-reading the text.