I infer that Xtreme English is bored with the banter on mathematics and I take the cue to move foreward. Thanks, XE, for saving us from ourselves!
In my professional years, no matter the system under discussion or development, one of our large concerns was to design in "graceful" failure modes. In some military systems, this meant designing such that loss of automated capabilities left feasible, manual work-arounds in place. In aircraft structures, it meant assuring that failures (tiny cracks) in critical structure could/should be detected before the failure became unstable and grew to catastrophic proportions. Thus, I was pleased to see the following item posted by Slashdot.org.
from the burn-it-up dept.