Text: As obvious as this insight seems today, though, it wasn't in 1983--Steve Jobs didn't realize it, my computer nerd friends and I didn't realize it and, I suspect, James Surowiecki didn't realize it either.
Entailment: Although this insight is pretty obvious today it was not obvious in 1983 and many people didn't realize it.
Contradiction: The insight was obvious in 1983 and many different people realized it then.