Alerting natural NT bids
There has been some discussion at my club following a Precision 1C opener (alerted and correcly explained on request) and a 1NT response (showing 8-13 balanced). One opponent complained, vociferously, that the 1NT should have been alerted. I found Blue Book section 4C1b a bit ambiguous and not particularly helpful. It talks about "no unusual information about strength". 8-13 isn't unusual to a Precision player but is it sufficiently unusual to an Acol player to warrent an alert? What constitutes "unusual"?
More concerning, the Blue Book says "It must not be forcing unless a forcing situation has already been created", but surely NT bids can easily create forcing situations, not by agreement but by virtue of the number of points revealed.
For example, consider the common Acol sequence of a one level opener, two level response and 2NT rebid. If the 2 level response shows 10+ and the 2NT is 15+, the partnership is known to have at least 25 points so many players would consider the 2NT forcing. However, a forcing situation hadn't been created prior to the 2NT bid so must 2NT be alerted because it's forcing?
In the case in point, I asked the Precision opener whether he considered his partner's 1NT forcing and he said he'd not thought about it but given a minimum partnership combined point count of 24, he thought it almost impossible he would contemplate passing.