[Quatar]

So, realistic illusions "seem completely real" and multi-sense ones "affect all senses".

So they affect touch as well, it's after all a sense we have.

But now the real question: Do they actually prevent someone from walking through them. I mean not because they don't want to, but because they really, physically can't? Or is it just their brain telling them, and they'll stop, thinking they just ran against a wall?

Ok, example. Someone hides the door to a room behind a Trid Phantasm, make it look like just another part of the wall. When I run my hand over it, it feels absolutely real and I won't notice that there actually is a door here.

Now what happens if (assuming I failed my resistance test against the Illusion and fully believe it):
a) I run full speed against the wall, Harry Potter style. Will the momentum carry me through? Won't my brain/the magic not allow me to do that, and I'll stop myself before I hit the wall?
b) Someone else picks me up and tosses me through the door?
c) I see someone else (who resisted the illusion) walk through the door? Will I automatically disbelieve the illusion? Will I refuse to believe someone just walked through the wall (and maybe consider that person to be an illusion)?
d)  somebody casts a Trid Phantasm of my hands being cuffed together behind my back (and I failed the resist test)? It would feel absolutely real, so I couldn't move my hands?

[Jack_Spade]

It's rather simple: That is what your Wil+Int or resp. Wil+Log resistance test is for:
If you get more hits than the illusion you notice the inconsistency, if not you/your brain stops yourself from registering them.

So for your castes that means:
a) If you make your test you won't stop yourself in time
b) You won't be stopped, but it might hurt as if you'd just been thrown through a closed door
c) The GM might grant you bonus dice to your resistance check, but it's just as possible that your brain rationalizes this experience away.

[Quatar]

a) Well yes, if I make the test it's easy, then I can just ignore the whole illusion. But I was wondering what happens if I don't resist the Illusion, and believe this is a solid piece of Wall, and I still run against it. (I edited my first post to make that clearer)

also I saw this in another thread:

d) What happens if somebody casts a Trid Phantasm of my hands being cuffed together behind my back (and I failed the resist test)? It would feel absolutely real, so I couldn't move my hands?