Isn't he supposed to be a human lie detector?
shareHe already suspected Greg of being a pot head.
shareHe was already suspicious about Greg.
And he was in denial about his son.
Although I think Greg's hidden camera rant forced him to face reality, since Denny was at military school in the second movie.
He doesn't want to believe his son would smoke pot, in his subconscious he automatically ruled Denny out which meant it had to be Greg's
share"Some parents can be blind.."
Yes, sure.
But this is not SOME parent, this is supposed to be a HIGHLY-TRAINED, specialized, professional in the spying game, with DECADES of experience, sensitivity, ability, INSTINCTS and all that, and he should ALSO know the profile of his son, he should KNOW his son better than the son knows himself, and he should _ABSOLUTELY_ have not only predicted the whole weed stuff, but also been able to prevent it, as it IS part of his psychological profile and make-up.
All this BEFORE the events of this movie even occur, and he should ALWAYS know when any family member lies to him, REGARDLESS if it's his own son or not. Why would that matter? Would he just suddenly forget all his training, lose all his ability, just because it's his son? WHY would that be the deciding factor?
Why would he _BECOME_ blind in front of his son, but not in front of anyone else, not his daughter, wife, or other people?
No. An agent of this nature would _ALWAYS_ know 100% whether _ANYONE_ is lying to him, or this 'human lie detector' crap would not have one iota of believability in it.
This movie is just badly written.
"Some parents"-excuse would fly if he wasn't told to be a 'human lie detector'. He should have AT LEAST instinctually, at least sub-consciously, at least in some intuitive, very tiny way felt and known there was SOMETHING wrong with his son's explanation, and at least in the back of his mind, later, started to doubt things. He should've stopped at SOME point, like before falling asleep, to process this thing again, because it WOULD NAG HIM at least, and realize his own son was lying to him.
I mean, what does he EXPECT a teenager to do, not lie to their parents? Can you even find one teenager that has never lied to their parents or foster parents or guardians or whatnot?
CAN YOU?
This man should _KNOW_ better, he should EXPECT his son to lie to him, especially about things like this. He should be RATIONAL about it, AND feel suspicious!
I mean, he should rationally be suspicious and explore all the evidence, and then he should be instinctually and intuitively suspicious and FEEL that the son is lying, because he's a spy, agent, a lie detector.
He can't just be 100% blind on rational AND feeling side after being an agent for so long, just because he WANTS his son to be innocent; he would be trained to DISCARD that kind of wishful thinking, or he would apply it in ANY situation, like when he sees a pretty woman and WISHES for her to be innocent, when he knows she isn't.
This explanation does not fly, it's not plausible.
For a regular parent, yes. For an agent, no.