It may be hard to comprehend the twisted logic that led to this tragedy.

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At the other, very complex "contextual value added" league tables are hard to comprehend.

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She said it is hard to comprehend how the same person would deprive Bachmann's children of their father.

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We find it hard to comprehend that women were not allowed to vote, or that interracial marriages were illegal.

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The long tail of the Internet is epistemologically very hard to comprehend.

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It's a decision Bob Pappalardo finds hard to comprehend.

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"It is hard to comprehend the shocking and horrific scenes we have seen this afternoon on a busy street as Londoners went about their day as normal, " said Bernard Hogan-Howe, commissioner of London's Metropolitan Police.

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Being here with this family, it's hard to fully comprehend the pain they have endured.

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At the end of the day, thinking in terms of billions of dollars is very hard for most of us to comprehend.

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