Completely full, half with liquid, half with air.
I tend to be cynical, when I see someone who represents themselves as homeless. The reason I word it that way, is I have seen those that live in certain area's that put on clean clothes, and grab a fake bundle and go out and beg. (shaven and unshaven) I've also seen kids, back when I was in high school, go out to a thrift store, tear up what they got, dress down, and do the same thing. Also seen those collect various forms of welfare, while living with their long term boyfriend and driving a new car (all done in his name to keep their benefits). I could list more examples.
But I have also seen examples where I knew I could help somewhat. (recent immigrant whose residence was torched, his family got out but he lost all his tools needed for livelyhood) Can't judge just by a photo you have to be there to know.
I can't say I entirely agree (or for that matter disagree) with Redfox, because what is typed could be read wrong, incomplete thoughts, etc. etc:
I don't believe that is our obligation, until we have our own houses in order. I understand doing what you can, but have seen those with what most of society think of as nothing, trying to help out, to the point of keeping themselves down.
As for deciding if someone is able, since one answer doesn't fit all, I am going to throw this question back... At what point does one not try to help? I remember a drunk on a bicycle, that my dad gave a few rides to, after his bicycle broke once. When his sister finally got tired of him not seeking help she kept trying to get him, she kicked him out. He showed up at my parents, saying he was ready to move in (wasn't going to happen).
When do you drop any safety net, that they may get to the want to change point?
Also as a whole, when should a thread get moved to the political section of this forum?