I think Windows 7 solitaire had an option where you could only get solvable games. Personally i like it when you don’t know if it can be solved - part of the puzzle for me.

I guess my old car (from 2005) does the same thing. Has no tyre pressure sensors but gave me a tyre pressure fault on time. Turned out my rear left had a small leak. Error light came on at 1.6 bar (rears are supposed to be at 2.1-2.3)

I don’t think they mean that Australia has to give more. They mean that Australis helping Ukraine in general is already a big message to China. If Australia is already willing to do “the right thing” involving a country that is so far away then you can imagine what they are willing to do when the threat is a lot closer to them.