These are the topics the jury received evidence on, heard from expert witnesses about, and was argued thoroughly during the case. Perhaps your questions will be answered if you look into the case further.
Let say I prepared my own coffee at home -and let's say I made it scalding not expecting to have to drink it till I got to the office 5 minutes later... but as I step out my door someone runs by and knocks the coffee out of my hand and spills it onto themselves and me ... Am I at fault, is anyone?