There are lots of things we don’t know. But there is a difference between things we don’t know and things that can’t be known. For example, no-one knows when Shakespeare was born (although we do know when he was baptized). However, it’s not impossible that in the future we could find out – a long lost document might be found that mentions his birth, so Shakespeare’s true date of birth is not unknowable, just unknown. This list contains 10 things that are unknowable in principle. Not only are they unknown now, they can never be known.

Keep Reading: Top 10 Unknowable Things.

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