Seems like some others I have misread the OP. Edward never came up with the name “Liam” a person at the table did. This changes the scenario quite a bit . . .
That’s the way I read it, and I don’t see a cold read out of the question.
(1) Edward points to an area of the audience and says he is getting the name “Joshua” (a common name).
Whether Edward pointed directly at “Liam’s” table or not isn’t that important. If no one had responded Edward would have simply expanded the “search area” and if that didn’t work he would have changed the name to something similar (John, Joseph, etc.). This is typically the way “psychics” go “fishing from an audience. Well within normal odds that Edward simply got lucky first time in selecting the correct area.
Exactly. If the name he tossed out was a miss, he would have moved on and it would have been unremarkable. All that Edward has done at this point is call out a name to try to find a mark.
(2) A person from a table in that area holds his hand up to indicate an association with that name.
“Liam” may have said something like “That’s me” or “That’s my name” and RemieV may not have noticed. She wasn’t looking directly at “Liam” in the very first instance. Even if he said it quietly Edward may have been able to lip-read it. I doubt Edward would have merely assumed that it was the person’s own name.
Edward found his mark. I actually doubt that Joshua even said anything like “that’s me”, but perhaps. Joshua may have given some “that’s me” type body language. The OP says Joshua stood up, it doesn’t mention him holding up his hand.
(3) Edward asked the man (“Liam”) to stand up and he was given a microphone
“Liam“ didn‘t say anything.
The OP says Joshua stood up, and doesn’t mention anything about Edward asking him to stand up, but I think it makes little difference.
(4) Edward then said it was weird because “Joshua” was the man’s name but he didn’t introduce himself that way at the table.
The real name may have been a name that is commonly shortened or nicknamed - William = bill, will, willy, etc. Don’t see why RemieV can’t provide the actual first name given as it’s a common name and the surname isn’t required and wouldn‘t be revealing any personal information. Even if it was would “Liam” care?
From the way it is worded in the OP these are two separate things, separated by a pause. Edward says that he is getting the name Joshua, which is weird because he is getting a sensation that the person standing up is Joshua. “Then Edward paused for a moment.” And then, Edward says that that the man’s name is Joshua, but that “he had not introduced himself that way to the rest of his table”.
When Edward calls out a name or initial, the idea is that someone who knows someone deceased with that name or initial stands up for a reading. This is the basic shtick. Of course sometimes when Edward calls out a name or initial a person with that name or initial stands up. This works for Edward either way because he can claim that the name is either the name of the deceased person or the name of the person the deceased person is trying to contact. Sometimes Edward will say, “And who is Joshua?”. The person might say something like “my grandfather” or “I’m Joshua”. Edward can carry on either way. At worst it is about a 50/50 guess as to why the person stood up. But Edward has been doing this a long time and mostly likely can sometimes get a good idea if the person stood up because they want a reading on somebody or if they stood up because it was their name that was called.
Then Edward pauses. Time to read the reactions. I would suspect that Joshua gave some indication that Edward was correct and that he was Joshua—if not a verbal indication, then something else such as a head nod. But some people at the table gave a different message—perhaps people shaking their heads. Edward has probably seen this before and probably guessed that Joshua uses a nickname.
Based on what he saw during the pause, Edward concludes that the man is Joshua but that he didn’t introduce himself to the table that way. What I find curious is that Edward only claims that Joshua used a different name for his introduction at the table. Why didn’t Edward say that Joshua doesn’t usually use the name “Joshua”. Or say that the spirit that he is talking to called Joshua by a different name? Or at least relate the use of a different name to Joshua’s life in general rather than just to the people that happened to be sitting at his table. Why does he relate the different name to the table introductions? Because Edward got the clue that the people at the table were behaving like his guess that the man was Joshua was incorrect. That’s why.
If Edward was wrong about Joshua using a totally different name, it would still be likely that Joshua may have introduced himself as “Josh”, or that he hadn’t introduced himself at all, or that someone at the table misheard the name, or that Joshua sometimes used a nickname, or the deceased spirit sometimes used a pet name, or whatever. He could easily spin it into something unremarkable.
(5) Another person at the table was then asked to verify that he had introduced himself as “Liam“.
More theatrical than asking “Liam” but also far more risky unless you already know the answer for sure.
Per the OP, Edward didn’t ask someone to verify that Joshua used the name “Liam”. Per the OP, the name “Liam” hasn’t even come up yet. Edward asked someone else at the table to provide the name that Joshua used when he introduced himself. That person provided the name “Liam”.
(6) Edward then asked Joshua to take out his driver's license and show it to everyone else at the table.
Once again theatrical but risky unless you know the person has a license and has it on them. I wonder if Edward asked if he had his license on him first? I don’t think RemieV has given us everything that was said in her short description and some really important bits are likely to have been left out.
Doesn’t seem very risky to me. If the person said that Joshua introduced himself as “Josh” or “JD” or “Junior” or “T-Bone” or something, there would not have been any driver’s license business. I’ve only known two people who are commonly known by a name other than their name, a shortened or common nickname for their name, their middle name or an obvious nickname. One from Africa and one from India. And the guy from India did have his nickname listed on the his driver’s license (as his middle name). And something like “Liam” is not an obvious nickname used by someone who doesn’t have a name “Liam”.
Even if the name “Liam” wasn’t on the license, Edward could have moved on without fanfare and have it forgotten as unremarkable.
So all that really happened, was that Edward called out the name Joshua. A guy stood up. Edward made a reasonable guess that the guy was Joshua. The body language from Joshua seemed to indicate that this was correct but the body language from the table seemed to indicate that this was wrong. That’s it.