Hypothetical. Let's say we decided off table to 4b some number of hands after determining what we believed to be the best amount of 4b vs. an unknown opponent's 3b. It's going to be some value AA/KK/AKs and some number of bluffs to keep villain indifferent between 5b shoving and folding with his 3b bluffs. The question is then, do you determine when to 4b bluff based on a specific card combination signal, or your brain's interpretation of when is now? This question applies to all cases where you are trying to achieve some level of balance. Do you let the cards dictate the action or just choose from similar holdings when the time seems right?