alt Hacker NewsIntent often matters in the law (aside from certain laws with strict liability). You intentionally drive your car into someone you hate and kill them => murder, go straight to jail. You're driving along normally and someone who's chasing their pet cat suddenly runs into traffic and you hit them => no charges. Sometimes you can be charged with negligence for not taking enough care to prevent something, but then you have to deal with the tricky question of how much care is enough.
If you're driving along normally and then tie a blindfold around your face and hit someone you've taken actions that still expose you to liability. And, in the case that you hit someone who is chasing their pet cat into traffic then you'd better hope you were following every facet of safe driving - being distracted, drunk or on your phone could easily result in you being charged.