After posting my last response on this topic, I tried to recall other examples where humidity is combined with temperature and, more particularly, in a refrigerator or quasi-refrigerator environment. Two other examples come to mind: wine storage and cigar storage.
I have a wine storage unit with both temperature and humidity control. In effect, the wine storage unit is a "warm" refrigerator "box" with a temperature maintained at around 55-65 degrees F (the recommended temperature for red wines). The humidity control is primarily to keep the corks (the real ones, not the plastic ones) from drying out and allowing air to enter the bottles and cause oxidation of the wines--not a good thing. Until Giotto's test, I hadn't thought about putting my pizza dough into my wine storage unit, but maybe I should think out of the box (or is it in the box?).
Although I will defer to Steve and Foccaciaman on all matters relating to cigars, it strikes me that cigars are much like wine bottle corks and, likewise, also benefit from temperature and humidity control to keep them in tiptop shape (I can't imagine anything being worse than a dried out cigar), and it is for this reason that humidors exist. I won't ask if Steve or Foccaciaman if they put their doughs in humidor "proofing boxes" along with their cigars.
I do know that temperature control is especially important for wines. I once had a wine collector friend with hundreds of bottles of some of the finest wines who was asked by his company to move to another job in another part of the country. My recollection is that it was from Arizona to Florida--in the summertime no less. When he expressed his concern about moving his hundreds of bottles of wines, which would have required a special refrigerated vehicle, the HR person he consulted with on this matter cavalierly suggested that he hold a big party, invite all his friends and just drink the stuff until it was gone. As generous as he was, he declined and decided instead to risk the move in the usual fashion, without a refrigerated van to protect his wines. At this point, I think that most readers can guess what happened. The heat in the interior of the moving van got so high that every bottle popped
. When the van door was opened, there was wine and corks and empty bottles all over the place
. Now, that is what I call a "proofing box" gone awry
As bad as that incident was, I don't think it quite measures up to another, more drastic "proofing box" adventure in which another friend lost everything he and his family owned when the moving van with all their belongings caught fire in transit to a new job location and burned to the ground, including a brand new automobile that had never been driven (and--as I specifically recall his telling me--a brand new Lazy Boy lounge chair that he had bought in anticipation of the move and had never been sat in). When I ran into him, he was in the process of trying to replace everything that had been lost.
In both cases, a LOT of humidity and a lot less heat might, as Martha would tell us, have been "a good thing"