How to Gain Validated Positive or Negative Feedback

If I was to try and abstract this into a pseudo code kind of problem, it would be how rapidly can you gain validated positive or negative feedback is sort of the way we make this better. Like, if you have a use case where you can very rapidly work out of the answer is valid or invalid, that's going to make that use case miles more accurate, miles faster. If you have a really slow feedback, then you're probably never going to really get there. And for instance, Google search as a search tool is not the killer application of this technology. The killer applications technology is going to be something that can learn from itself really fast in whatever application that actually is.