Rogov and Hoke - i'll try to take a few of both your points; starting with Hoke. nothing down to the parsing issue seems to me to constitute a per se problem with competitions and many would surely look to balance and to make sure to invite one or two more competant judges than actually needed in case someone comes down sick or misses a flight - as Pooch did at last years FLIWC. as to the Riesling example: i simply don't understand how having say seven categories would yield seven times as many gold medals. a group of 50 rieslings no matter how divided might merit 10 gold medals or none. the chips fall where they may. is someone assuming that the highest scoring wine is automatically a gold medal? not so. then there is the subject of grade inflation. one needs actual evidence here; and it can't be hard to come by. is it in fact true that the SF or Riverside competittions have awarded more total and gold medals as a percentage of entries each year of their existence? that information is available. what does it show?
I speak from experience, David. Yes, one should have a couple of judges on hand. And yes, no matter how well you plan, shit happens; judges don't show up, get sick, etc., and stand-ins get asked. I have been in that situation myself, when I was asked to sub---at the very last minute---for a judge friend. I have also sat in on panels where the listed judge did not show and a "judge in training" was put in the chair at the last moment; this JIT, mind you, was a perfectly nice young lady who had worked in retail for all of two years in a small store. She was sitting down with me (no big shakes there, I'll grant) and also a Master of Wine and Winemaker of great repute, as well as an experienced grape grower and winemaker from another region. Like I said, shit happens.
The Riesling: you're not catching what I'm saying. If you provide one category (Riesling), then you're likely to get a certain number of medal awards. If you subdivide Riesling into sub-categories, human nature is to consider that each category MAY be deserving of medal or recognition And don't tell me that doesn't happen, David, please: I've been there and I've seen it happen.
Another point I didn't mention is the personal predilections and campaigns of judges: I have been in situations (more than once) when judges made a point of mentioning they were LOOKING to champion certain varieties or regions, and would be more than willing to cheer on a particular wine or style to a gold medal "to give it a little nudge in the market" or "to bring a little well-deserved attention" to it.
I have also been part of discussions where outright bargaining went on at the judge's table---if I give you this, you give me that. It happens. Judges are not impartial; sometimes they are distressingly partial. Most are not, or try not to be anyway. And as Rogov said in a post, some judges are considerably more forceful or commanding (and sometimes bullying) than others. (No derogation at all intended or implied, but have you ever worked with Darrell Corti on your panel? Harriett Lembeck? Very decided people with very decided attitudes, and potentially inhibiting to a younger, less experienced judge. Even Berger, god love him, can be unsettling to a younker, as he cruises at high speed through a flight, finishes before you do, and then sits there reading the paper or writing, obviously bored to death and ready to get on with it when you're just getting to wine three out of ten.

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As to "the chips fall where they may"? That is surprisingly naive, David. The chips may fall where they may, but if you don't award according to some very obvious direction by some competitions----you don't get invited back again. Does that happen with every competition? Of course not. Not even most of them. But it happens.
Same subject: I've been in more than one competition (and what were considered reputable competitions, and were, I think, deserving of it) where a panel suddenly says, "Oh, you know we haven't given any gold medals at all yet. We better pay attention to that." Also, "They're expecting at least two or three gold medals from this bunch, so let's see if we can find some."
Ive also been in a situation where we gave a high award and our table captain came out afterward and said, "Wow, the back room crew is really surprised you gave that to wine #5; that might be controversial." Gaffe? Not supposed to be done? Nope. But it happens. What would you do in a situation like that? (We could have revised our scores at any time we wished.)
Another situation: a younger, somewhat naif judge was at a panel of four (always a bad idea, even numbered panels) and it was obvious that she was feeling a nervous. Regardless of what score she wrote down, she always hedged when it came time to announce her score until others chimed in with their opinions. She was almost panicked when it was her turn to go first on a wine, thinking she might be outside the norm. And I know for a fact she would change her verbal score from her already written score to conform to the group consensus.
Finally,
is it in fact true that the SF or Riverside competittions have awarded more total and gold medals as a percentage of entries each year of their existence?
That's not what I said. I did not specify specific competitions in my original comments, David.
You seem to be particularly vehement about defending competitions from any and all potential problems. Your experiences appear to have been supportive of that stance. Mine haven't; not always. I think, overall, competitions are a good thing. I think they've also often been overly abused and sometimes shoddily run. And the public needs to be aware of both sides.