Re:Zero kara Hajimeru Isekai Seikatsu

[KrayZ33]

They take him out of the equation, without knowing what the equation was?

What's so hard to understand about that.

If I play against 1 player instead of 2, it's obviously easier to plan around.

Assuming he was an evil cultist (which they don't even know), what if he already set a trap? What if he had allies incoming? What if he is mind controlling Ram and Emilia with some strange power? They basically know nothing and decided to not find out anything more.

They spoke to him for a few sentences and judged him based on that. The moment they felt he was a danger, they should've tried to find out more. At the very least, they should've interrogated him when he was imprisoned. It would not be ideal, but I would at least understand that.

So what if they had asked him, what would have changed?
It all comes down to Garf not believing him anymore.

Him attacking Subaru the first time they met does have a reason, obviously.
Experience, most likely.
I feel like we are blaming the guard dog for guarding the house.

[shinta|hikari]

What's so hard to understand about that.

If I play against 1 player instead of 2, it's obviously easier to plan around.

It's not hard to understand. It is too simplistic. I already gave examples of why doing it this way could've been an inadequate solution, as well as an inhumane one if the target is indeed innocent.

So what if they had asked him, what would have changed?
It all comes down to Garf not believing him anymore.

We won't know if it could change anything because they never even tried it, is the problem. Maybe Subaru has a completely valid reason for smelling like a cultist that they can go ahead and verify with Emilia, Ram, and Roswaal. But no one knows because no one tried to find out.

As for your second point, I can understand that. If Garfiel really just branded him as evil and no longer believes anything he says, then it is reasonable for him to not bother interrogating and just went straight into imprisonment. That doesn't mean knocking him out and imprisoning him are moral and acceptable actions, but I think that is unrelated to your point.

At this point, I've said all I can say about this topic, so I'll end my replies here. I feel we will just go around in circles saying the same things, so let's just agree to disagree.