Interchangeable parts - won't. There is always one more bug. Nature is a mother. Beauty is only skin deep, ugly goes to the bone. The other line always moves faster.
Friends come and go but enemies accumulate.
If everything seems to be going well, you obviously don't know what the heck is going on. In order to get a loan, you must first prove that you don' t need it. Anything that can go wrong, will go wrong. When a broken appliance is demonstrated for the repairman it will work perfectly. Any tool dropped while repairing a car will roll underneath to the exact center.