I agree with this:
And also with this:Zom wrote: ↑Sun Jan 14, 2018 1:05 amMy understanding is that a stream-winner can break any of precepts on very rare conditions and never up to the level of gravity when this will lead him to rebirth as animal or worse Generally, he is very virtuous all the time, for sure. But still - no, he is not an arahant for whom breaking precepts is just an impossibility.
But a harmless solution to such a case seems difficult to come by.
See also Unwholesome done knowingly and unknowingly (the German version is better) - I found this essay helpful at some point in my life, and quite informative (and leaving room for developing one's own judgment).