Scarce resources are kidneys. There are not enough of them to go around. Not all people that need kidneys will get them in any time frame. They are also ratione

Scarce resources are kidneys. There are not enough of them to go around. Not all people that need kidneys will get them in any time frame. They are also rationed - you get one kidney transplant and that's it. On the other hand the people that need lets say hip replacement will get it. The system have enough capacity and budget to serve their medical needs. But it works better if the people are properly spaced.