gnasher, on 2015-April-25, 18:02, said:
If your partner knows from shared experience that you might lead low from Qx, it's a partnership understanding and disclosable under the Laws. If he merely surmises it from general bridge knowledge, it's not.
This distinction looks to me almost impossible to make, at least in this case, particularly if you believe rules in Bridge are not etched in stone and exceptions to rules you teach beginners abound.
It sounds to me all a bit like splitting hairs.
Full disclosure is all well and good, but there are limits.
Whether you lead 3/5th or fourth best or anything else is a matter of agreements, but whether to lead low or high from a doubleton honor is primarily a matter of technique, not of agreements.
I am not at the table to teach opponents Bridge.
Rainer Herrmann