I think the author would say that it's "not working" rather than "failing", but I would also say that this is a pedantic distinction. One could also arbitrarily

I think the author would say that it's "not working" rather than "failing", but I would also say that this is a pedantic distinction. One could also arbitrarily say hardware never truly fails, e.g. if you account for MTBF as part of the design.