barmar, on 2019-October-04, 08:39, said:
It's not required, the law says you may announce this.
Yes. "Established usage has been retained regarding “may” do (failure to do it is not wrong)…"
barmar, on 2019-October-04, 08:44, said:
Why is it extralegal? The law says that you first try to get agreement that UI may have been transmitted. If you don't get that agreement you call the TD immediately; if you do, you call the TD later if you think the UI caused damage, and you may first announce that you reserve your right to do so.
The announcement is just a reminder that we're not completely done dealing with the UI when we get agreement that it occurred.
No. The law says that you announce that you reserve your right to call the director. Doing something else ("try to get agreement") is outside the law, hence extralegal. And if the opponents don't think that UI may have been passed
they are the ones who are supposed to call the director.
Later, if you have "substantial reason" to believe that an opponent has used UI, you should summon the director "when play ends", though it's not an infraction to call him earlier than that (though not before you have "substantial reason"). "There was UI", even if true, is, by the way, not "substantial reason".
The way the law is worded, it would not be wrong to say nothing when (you think) UI has been passed, but later to call the director when you have good reason to believe that not only was it passed, the opponents took advantage of it. I suspect that Law 16B1 exists because the lawmakers feel that it may avoid disagreements, bad feelings, and bad rulings when the director has to determine, after the fact, whether there was UI. But the way it's worded, it doesn't
matter if disagreements and bad feelings are generated, the ruling should be the same.