Quote by Jack L. Chalker
I have taught history on the high school and college levels, and am or have been a lecturer at the Smithsonian, The National Institutes of Health, and numerous colleges and universities, mostly on science fiction and technology subjects.
Summary
This quote suggests that the speaker has significant experience in teaching history and conducting lectures in various reputable institutions. Their subject expertise seems to primarily revolve around science fiction and technology. The quote indicates a background of knowledge and expertise, particularly in the field of science fiction and technology education.