interlock

Has a hardcoded interlock that shuts it down if it goes past that limit.

The dryer had a safety interlock that disabled the heater.

For higher voltage, a box with a door connected to an interlock that cuts power when the door is open is better.

Cop harass her at some dark parking lot, she tries to run but can't start her car because cop had the interlock activated on her....

Installing your own generator interlock is no easy feat.

To receive a shock, either the interlock would need to fail, or the operator would need to deliberately defeat it.

This can actually make the problem 10x worse, creating a sort of concrete-like substance as the clay and sand particles interlock.

This is bad enough that there probably would have to be an safety interlock on computer case access panels that reverses the impeller to a halt when the enclosure is opened.

I think Durga's comment on the NYT site puts it best: While the above story describes a real problem in SF, it ignores two much more significant contributors to the issue that interlock with the effects of tech money.

The critical property here, the reason why Lego stays simple all the way, is that the "operation" you use to join two clusters is exactly the same operation you use to join two individual pieces you interlock their knobby bits.

This is the bug that occurred:> The defect was as follows: a one-byte counter in a testing routine frequently overflowed; if an operator provided manual input to the machine at the precise moment that this counter overflowed, the interlock would fail.

The accidents occurred when the high-power electron beam\n was activated instead of the intended low power beam, and\n without the beam spreader plate rotated into place.\n Previous models had hardware interlocks in place to\n prevent this, but Therac-25 had removed them, depending\n instead on software interlocks for safety.