I don't think I remember that. Even that I'm not sure I agree with.
1. It doesn't only have the effect of sanity. It's said he's in agonizing pain. I may think it's forced and could've been done better, but I also place that under aspects of the genre. This is the same series of movies that had the microwave emitter. I also don't think the burns was the only sanity effecting thing for him.
2. I don't necessarily agree with the idea that the cops would being paying enough attention to the buses to see that, in that way.
3. The movie develops that Joker is using corrupt cops, and I think the movie never says the cops went looking for explosives, I think it just shows Gordon giving the order to evacuate the hospitals.
I'm not sure if that's what I meant when I said that he doesn't care, more that he's not counting on 1 thing to always go right and nothing else to make his plan work. The people didn't blow eachother up, so even though he may have thought they would, he goes to the next way of doing it, in doing it himself. I think in a similar, but not exact way, with the phone call. He may have planned to get a phone call for the situation himself, but when that didn't happen, he did something else to get the phone call by taunting the cop into a fight, so he could hold him hostage and get the phone call. Is it suspect? Or is that how the Joker acts? The Joker says he's a dog chasing cars, he just does things. I think that's not a poor estimate of the character. Yes, he relies on plot armor as a character. I think I've come to see the Joker as someone who does ridiculously things that get himself hurt or could get him killed. In reality he may not survive, but this movie isn't reality. I see it as a heightened world. Realistically, would Batman be able to do what he does, like that?