It is impossible to make anything foolproof, because fools are so ingenious. Honesty is the best policy - there's less competition. He who hesitates is not only lost, but several miles from the next freeway exit. If computers get too powerful, we can organize them into committee. That'll do them in.
Logic is a systematic method of coming to the wrong conclusion with confidence.
When all else fails, read the instructions. If it breaks, it needed replacing anyway. Never let your studies interfere with your education. Those supplies necessary for yesterday's experiment must be ordered no later than tomorrow noon. Enough research will tend to support your conclusions.