"Between the illusionists and the mediums, how can I be sure what is true?"

Just in case you're still around. I've nothing much to do so let's go with your original question.

A 'medium' - let's be precise here, an 'evidential medium' - will do her/his best to provide evidence that the communicator they are linking with is someone you know or are associated with.

A psychic can't do that and may simply 'read' from your own aura details you already know. If then she/he feeds them back it's not a message from a loved one etc. and is simply information learned from yourself. See the difference?

Sadly some psychics masquerade as evidential mediums and that's where illusion may enter the picture and good illusionists can deceive anyone inexperienced - much less likely to happen when the sitter understands what's happening vs. what should happen.

Now....there's no making any spirit-person come to speak to you as the 'sitter'. If they come it's their choice. If then they choose to try to make their presence known it's up to the medium to assist as best she/he can.

Doesn't automatically mean there will be success but at its best it can be amazing. At its worst it can be frustrating. But at least it's a genuine attempt although such occasions may be the most frustrating of all.

Someone identified but unable to get through a good message. A sitter trying to match the details to what they know but finding it hard because they may not have all the information or can't think of it quickly enough. A medium busting a gut to get the message accurate but with a link that's simply not providing the desired outcomes....So,Afro7hundr with your strange username, and anyone else watching, evidential mediumship ain't as easy as we'd hope but neither is it necessarily an illusionist's trick.

Charlatans, deceivers can be found in all walks of life - never give a sucker an even break is the principle on which they work. They're the ones you need to watch out for.

True illusionists are there for our entertainment - enjoy!