(1) the person needs to have died for the law I mentioned to be relevant I should have clarified (2) could you clarify the requirement of there being ‘no reason’? I think the only defence along that thinking is the strike was reasonable in the circumstances. What’s his defence? Well that knee-ga-row done hit mah truuuck. That’s not a reason to kill someone poppinmollies. Poppinmollies, imagine if you were poppin some mollies and someone hit you with a bongo and you fell a m off your bike. Not a good trip.

https://www.austlii.edu.au/cgi-bin/viewdoc/au/legis/qld/consol_act/cc189994/s314a.html

What would you say the retaliation should be? Kill him? He hit him with a object, while he was facing the other way. He fell unconscious off a bike on to concrete which was foreseeable.