International vendor directory — my results so far

Dr.RenalNash said:

Almost every unanswerable question in these threads is unanswerable because three things changed in the same fortnight, and no amount of subsequent…

Can confirm. Same sequence, different timescale. I had assumed I was the exception until I read this.

Dr.RenalNash said:

Almost every unanswerable question in these threads is unanswerable because three things changed in the same fortnight, and no amount of subsequent…

Adding the part of the answer the thread has not reached. The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either. Those three things can all be true at once, and most arguments here are two people holding different parts of that.

Adding the numbers, since they settle part of this. Say what you would expect to see if you were wrong, before you look. It is a small discipline and it changes what you notice.

A narrower follow-up, since the general answer is now clear:

How would you tell the difference between that and the alternative explanation?

OP back with an update, since a thread like this is useless without one.

Update — I was wrong in the opening post, specifically about the direction. Correcting it here rather than editing it away.