mycroft, on 2011-May-20, 12:37, said:
I think I fall on the evil, evil, but designed for exactly this case "Players who, by experience or expertise, recognize that their opponents have neglected to Alert a special agreement will be expected to protect themselves" line in the Alert chart.
Enough people don't Alert Support doubles that this one should be checked(...)
Hiss.
I would also deny E/W an adjustment, but I strongly disagree with this application of the regulation, except perhaps in the case where the players in question are known to be novices.
I am not completely familiar with the regulations in place, but it seems to be the case that there is at least one non-alertable meaning, and that the support double should be alerted. When there is no alert, the opponents are entitled to assume that it has one of the non-alertable meanings.
I think you can only overcome this presumption if there is evidence that the opponents should have been particularly suspicious. Four cases spring to mind: (1) because of the regulations, the call in question must always be alerted, (2) because the opponents know that the pair in question have a relevant agreement (e.g. there is evidence that they have read the relevant portion of the system card), (3) because a previous explanation implies that the bid should be alertable, (4) because the player in question is known to be inexperienced enough not to know when to alert.
In the present case, I see no reason for the opponents to be particularly suspicious. They have the right to assume that the pair in question, being at least somewhat experienced, knows the alerting regulations and will alert appropriately; the fact that others frequently do not merely means that they should, if damaged, expect an adjustment against those pairs as well. One can sensibly deny them redress on other grounds, but not this one.