kkleiner writes: "Researchers from Tel Aviv University in Israel and Brigham & Women’s Hospital in Boston have collaborated to create a robot that can swim through the intestines. The size of a large pill, the “microswimmer” is powered by the strong magnetic fields generated by an MRI machine. A tail measuring 20mm x 5mm made of copper and flexible polymer vibrates due to the magnets and propels the little microrobot through the gut."
PL/I -- "the fatal disease" -- belongs more to the problem set than to the
-- Edsger W. Dijkstra, SIGPLAN Notices, Volume 17, Number 5