First of all the guy in the megila story may have been a baal t’shuva and NOT HEARD THE MEGILA THAT MANY TIMES AT ALL.Or might have not known it well for a zillion other legit reason.
Even Moshe Rabeinu forgot a halacha TEMPORARILY because Hashem wanted him to…
And Hashgacha Pratis…I was freezing cold yesterday and needed a car service to get to a second downtown appointment…with a document that had to be notarized.
I saw a sign that said NOTARY PUBLIC,went in,and the woman asked me where I needed to GO!It was ,of all places,an upscale livery/car service with a notary public on the premises!