A failure will not appear until a unit has passed final inspection.
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.
Any given program will expand to fill all available memory.
Don't force it... get a bigger hammer.
People who can least afford to pay rent, pay rent. People who can most afford to pay rent, build up equity.