How to Use "incapable" with Example Sentences

1. But he was incapable of making the right choices .
2. Our political system seems incapable of achieving improvements in any of these areas .
3. By attaching to the virus they make it incapable of infecting other cells .
4. This matters , because congress has shown it is incapable of making such difficult cuts .
5. Human beings are incapable of listing all possible futures and assigning probabilities to each one .