That makes sense. So say I have tests that check endpoint/a. When those fail I fix the test and update the simulated output. Here's my issue: let's say I'm a moron (or just human) and I make a mistake updating the simulated output. Now I have updated stubs that are wrong. My code appears to work because it's against the stub data but won't work in real life because the stub isn't verified.
In your opinion does this fall under the category of acceptable risk or am I looking at this wrong and there is no risk? Or is this just a matter of developing against developing vs mature services that are less likely to change?