Humans are curious creatures; we want to "know". But we cannot know everything. In fact we cannot really "know" very much!
So we have to look at what evidence there is. Learn from the knowledge of others. Modern science is discovering, and learning, something new every day. We now have telescopes far in advance of the telescope invented by Newton. Electronic telescopes that can "see" far into outer space. We have telescopes actually in space! We have "probed" other planets. There is a Space Station/Laboratory in space that passes my window twice a day.
In modern day living we can only know what others tell us.And the best people to "know" are not the Spiritualists,the Magi,the witches. They are the Scientists and the Scholars.
In times gone by, if you were ill, you would consult a witch.
Modern medical science can do things that the old witches could only dream of! (I am a witch, but I would not try a hip re-placement!) It is still "witchcraft"; but it is "scientific" witchcraft!
Some people will believe anything! Some people will believe nothing!
My witch teacher told me this many years ago:-
"Don't believe everything you read. Don't believe everything you hear. And only believe half of what you see!"
I have lived by that maxim all my life.
Sir Isaac Newton said it perfectly:-
"Everything I know is likened to a pebble on a beach. What I do not know is the restof the beach!"