maybe you and helen should do a podcast for your next sci-fi movie review
Lee's Daniel's' THe Butler'

Perhaps, just perhaps, you are Helen are morons?
and uses words so big even our next door neighbor who's a physicist couldn't comprehend half his dialogue.
I'm guessing you neighbor is a
student
studying physics, not a physicist. First, this movie's dialog is about computer science, not physics. So having a computer science background would be more valuable than physics. But no dialog in this movie that should be challenging to a physicist. Generally speaking physicists are aware of the computer science terminology used in the film. If your neighbor is a physicist, they have a weak vocabulary and are not very well read, which makes me think that either A) very unlikely to be a real physicist or B) they are a lousy physicist.

So what you're actually saying is that because you didn't understand why the two male leads were the way they were, and because your small vocabulary left you unable to understand a few scenes, you didn't like the movie.
Perhaps you should stick to coloring books and Sesame Street reruns.

The role of Caleb called for an insecure, lonely type of individual, a young man without much of a social life, who often feels awkward in social situations. The casting for the film was perfect, the three main leads Oscar, Alicia and Domhnall were magnificent.

I think Voordads Glimpenhauser would've been better.

Not sure what you have against Gleeson, I thought he did very well in Ex Machina. He's meant to come off uncomfortable and insecure. I don't think Cruise or Cooper have the versatility to pull off that sort of role and it wouldn't be believable anyway. It would just distract from the film.
Complaining about his name is just silly and shallow. He's Irish, he's from Ireland. He has an Irish name. That's what happens. Also, Isaac was perfect as Nathan. Another very versatile actor. I never caught on that his role in this film, Star Wars and X Men Apocalypse were even played by the same actor.

I think this is just about right as a response to the OP.
Our knowledge has made us cynical, our cleverness has made us hard and unkind.

This is your life, and it's ending one IMDb post at a time.

Dude with this post youve outed yourself as a total moron and a philistine a dozen times over. Oscar Isaac is top tier stuff and Gleeson was perfect for the role. You just didnt like the film and you should have left it at that instead of trashing someone who has probably accomplished more than you ever will. Go watch a movie with Cruise or Cooper if you like them so much, there are plenty of them out there and they all target shallow pieces of vapid trash like you.

They should have cast better known actors- Tom Cruise or Bradley Cooper would have been more sufficient in Gleeson's role.
They are probably too good looking and confident to fulfil the role of a geeky, shy guy.

I thought Caleb was a bad actor. Very similar to the acting of both actors cast as Anakin Skywalker. Very wooden. Caleb sounded as if he was reading an instruction manual. The other guy was odd but appropriately creepy. Could have been better choices for him but low budget. Fasbender would have been better which would be interesting because he played a robot in Promethius.