Well, guess what? The research paid off, and all that "useless" investment in basic knowledge has now burgeoned into a promising new diagnostic test for the early detection of diseases such as lung cancer, well-funded by the National Institutes of Health, with the possibility of saving many lives that might otherwise have been lost.
I now believe that there is no such thing as "useless" research. Who knows where even the most unpromising new pathway may lead? And those who seek to know more of the obscure branches of knowledge, Demodex folliculorum or even the volatile organic compounds in human breath, may yet find their names amongst those that "...led all the rest." Not just for the love of learning, but for the totally unexpected and astonishing benefits that they bring to their fellow men.