Sorry, I still can't time travel.
This is low brow, even for you.
Do the study. Economists isolate variables all the time. I gave you a study that examined every NLRB secret ballot election over a 5 year period, why are you unable to provide similar support for your side?
Because it doesn't exist. You're just pulling nonsense out of your ass.
Aside from the absurdity of your alternate possibility, you have no data for it, and the data you do have doesn't support your contention. So yes, that's a continuing logic fail.
I do have data, that's not what we're arguing about. We're discussing the explanation of the data. Since you need baby steps, let's go over it again:
In 2007 alone, there were 29,000 confirmed incidents of management harassing and intimidating workers over union elections and membership.
In 2007 secret ballot elections were held in all such cases. Thus, even with secret ballots, management still violates the law constantly. There are at least three causal explanations:
1) Secret Ballots don't inhibit management from intimidating and harassing workers at all.
2) Secret Ballots do inhibit that harassment on some level. Thus, in a world without secret ballot elections, there would be at least 29,001 incidents of management harassing workers, and there could be many more.
3) Secret Ballots actually cause more intimidation. In a world without secret ballots, management would retaliate against the workers who supported the union, but because they can't isolate those people, they retaliate against all workers causing incidents numbers to inflate.
Now, just using the horeshit lazy-ass reasoning style that you employ, arguments for all of those can be made. In a world of pure reason, there's no way to distinguish between them. We need to look at actual data to make a determination of what's going on.
Now, whatever argument you want to make, make it and provide the data to support. Stop whining like a child.
Another post from you, still nothing resembling substantiation. It's almost like all of the data shows your opinion to be wrong.