To me "I don't know" is pretty close to "didn't happen" anyway. I mean we will even say "hmm, I don't know about that" to indicate skepticism.
I suppose you are picturing someone who is obstinately refusing to believe or even investigate a claim, but when I hear "null hypothesis" it's really just "you haven't given me any reason to believe this." And that's not quite the same as "I don't know" but it's not that far off either, is it? Maybe it's just me.
I suppose you are picturing someone who is obstinately refusing to believe or even investigate a claim, but when I hear "null hypothesis" it's really just "you haven't given me any reason to believe this." And that's not quite the same as "I don't know" but it's not that far off either, is it? Maybe it's just me.