In message , bluebell
writes
Had he started off by simply saying, " Are you sure you have that
right, I think...." ( which is actually very Biblical in terms of
approach) and then gave his lengthy exposition of knowledge. Real
politeness costs nothing.

But I carefully avoided saying that you were wrong ...

But his way was the modern aggressive version. I am getting tired of
modern agression. Maybe thats why I spend my time on my smallholding/
garden?

.... which would seem to make what I wrote less "aggressive" than your
proposed alternative.
--
Stewart Robert Hinsley