I look at property-based testing the same way I look at Design by Contract. It can be used to find errors in existing systems, but it's also valuable when you a

I look at property-based testing the same way I look at Design by Contract. It can be used to find errors in existing systems, but it's also valuable when you are designing. Just asking yourself what laws a function should adhere to as you are considering writing it function puts you in a different frame of mind and you can end up with simpler software.