Started this morning and already overthinking everything — my results so far

Dr.PainCLE said:

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

There is a second half to this that has not been said yet. 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.

The figures, for anyone assembling their own picture. Practical: whatever you change, write down the date and the reason. In three months the reason is what you will have forgotten, and the reason is what makes the record worth having.

If somebody has the primary source to hand I would rather cite it than paraphrase it.

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

How long did you give it before you decided it was working?

hank_denver said:

Practical: whatever you change, write down the date and the reason.

Pushing back on hank_denver here. Pushing back on the consensus forming here. Consistency is not the same as correctness, and a board that agrees with itself quickly is usually agreeing with the first person who sounded certain.

Happy to go further on any of that.

hank_denver said:

Practical: whatever you change, write down the date and the reason.

That is right for the common case. Whether it is right for the case being asked about depends on a detail that has not been given.