> I'm not sure I get what you mean by "you might not be looking at the meaningless part"? For example, you might not be pushing buttons that trigger the meanin

> I'm not sure I get what you mean by "you might not be looking at the meaningless part"? For example, you might not be pushing buttons that trigger the meaningless part, but the other parts of the system might still be functional. > What's the difference between seeing a bunch of test failures and fixing them one by one until the test suite is all green, and seeing a bunch of compiler errors and fixing them one by one until the compiler runs clean? The difference is in one of the cases a highly qualified professional has freedom to decide _when_ to do the fixes.