Regardless of the relative value to ascribe to unit testing, the confidence value is obvious from the intentional and functional double checking, which can be d

Regardless of the relative value to ascribe to unit testing, the confidence value is obvious from the intentional and functional double checking, which can be done piecemeal. There is still a problem with added side effects, which unit tests dont pick up on. This will probably be addressed with fn signatures...which doesnt do much but alert for changes. Eventually unit testing can start to approach formalism with monitored functions, wherein side effects must be asserted for a unit test to succeed.