in reply to
Your two example lines are not realy duplicates.
You need to define when you consider two lines equal. When the first x words are equal? Or the first y characters?
By rote learning.
Via Genetic memory.
It's provided by my firmware.
I just remember them.
Thirty days hath September
My computer gets it right, usually.
I just ask someone else.
Someone punches me on the first of the month.
Results (65 votes),