A failure will not appear until a unit has passed final inspection.
Any given program will expand to fill all available memory.
First Rule of Acting: Whatever happens, look as if it were intended.
If there is a possibility of several things going wrong, the one that will cause the most damage will be the one to go wrong.
If your project doesn't work, look for the part that you didn't think was important.
Investment in reliability will increase until it exceeds the probable cause of errors, or until someone insists on getting some useful work done.