ah, fair enough! maybe it is/was a uk thing (admittedly times might have changed a little since i did my masters/phd).

at the very least i have a wikipedia article on therac 25 to read through now. so thanks for that!

also, yea i remember really enjoying the ethics module too. lots of discussion and not always a clear answer. was very different to the rest of the "one correct maths answer" in a lot of the other modules.