“I think or almost know Gus attacked his father in revenge for turning him over for unwanted psychiatric abuse. It is a betrayal of sorts.” Yes, I guess after thinking it over , that part is clear. Now the father had no suspicion of this -he was a complete blank. So that is strange, unless you start thinking… well here it is, what was wrong in the relationship – emotional repression taken as normal. He’s sitting there,at dinner , perhaps uncomfortable that his son is not talking but “no anger” is the normal, nothing wrong there, been taken care of or suffocated a long time ago.So it finally spilled over into violence and the father still doesn’t understand. Doesn’t take much emotional repression for a personality to get squashed and splintered. There may have been other things wrong but there was this one thing wrong there somewhat certain..