You said "negative rates are related to inflation but they aren't themselves deflation" Is that a typo?
Also, the point is to look forward in a reasonable manner given multiple factors and probabilities, not just blindly throw out a prediction. The thing is once you've gone past the "no indication" as you put it and actually realize or confirm we're in a longer term deflationary environment, the damage will already likely be at a point that's a lot more difficult for you to make the appropriate move or put yourself in an advantages positioning(whatever that means not trying to get into a super long debate regarding what to do).
There's a reason the FED has fought so hard against deflation for decades now, we have a consumer based economy and rely on expansion of debt to keep things a float.