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Holmes and I had been working on a case involving two thieves.
They had done a very good job at covering their tracks, but they hadn't been smart enough to outsmart Holmes.
We seemed to be a couple of steps behind them, but we still hadn't figured out where they were headed next.
"Do we have any new information?" I asked Holmes as he looked through some papers on the men.
"The only information I have to gather thus far is that they were born on the same day, in the same year, to the same parents."
"Why, that must mean that they are twins."
"No, they aren't twins."
"Why, that's not possible. They must be if they were born on the same day and year, and to the same mother."
Holmes didn't respond. He continued to look through the papers in his hands.
Somehow, he was right. Two men had been born on the same day and year to the same mother, yet they were not twins.
How could the men not be twins?
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