Posted: Jul 25, 2018 4:02 pm
by Thommo
- I lack the belief that there is intelligent life somewhere within our galaxy outside our solar system.
- I lack the belief that there is not intelligent life somewhere within our galaxy outside our solar system.

Both statements are true, and as a consequence the statement "I believe there is not intelligent life somewhere within our galaxy outside our solar system" is not true.

If "I lack the belief that there is intelligent life somewhere within our galaxy outside our solar system." meant the same as "I believe there is not intelligent life somewhere within our galaxy outside our solar system" this would not be possible. In short believing something is not true implies lacking belief it is true, but lacking belief something is true does not imply believing something is not true - you may simply have no basis on which to form a judgement.