We are not sure of many things in this world, even those that we observe through microscopes and telescopes.
We don't have absolute knowledge, certainly, but to depict everything as a blanket level of uncertainty is an oversimplification.
Such phenomena as ghosts and NDE's and ESP are bound to be difficult to observe and analyse.
For the same reasons as unicorns and leprechauns, or for the same reason as Higgs Bosons, or for the same reasons as magnetars?
For one thing they don't happen when we are ready and want them to happen.
You're presuming here that they happen at all - it's not just that we don't have any proof, we also don't have any understandable mechanism by which they might occur, and if they were to happen they would massively contradict well established principles from other investigations into the world.
Secondly they are very subtle and difficult to observe through standard instruments and methods.
So are goblins.
But once many people have actually observed these phenomena and experienced them over the centuries and in different cultures, different social groups and different age groups, the possibility of these phenomena being real should be acknowledged.
People haven't observed these phenomena, necessarily. People have had experiences they can't explain, and they have put it down to this, but that's not been confirmed. Different cultures and social groups have vastly different experiences which have been loosely gathered together under a single umbrella, but when they're investigated there are so few common elements you'd presume they were different phenomena unless you were desperate for the validation of larger numbers. The possibility is acknowledged, but it's vanishingly remote.
It is tiresome to keep coming up against the same wall of dismissal and scorn every single time.
It's tiresome to have superstition put on an equal footing with valid predictions purely on the basis that neither has been definitively proven or disproven, but this is the life we live in.
It shows a lack of intellectual honesty and a 'boxed in' thinking that is regressive.
On the contrary, it shows an intellectual honesty; in the face of persistent pre-enlightenment myth being repurposed in an age of science to try to validate mysticism we continue to differentiate between the grades of uncertainty. Intellectual dishonesty is saying 'well it hasn't been disproven' and 'lots of people believe' and thinking that should merit all arguments being dropped.
O.