Modern Times was, so it seems, the epitome of Charlie Chaplin’s ideology towards the new direction of film. Throughout the piece, he is constantly dehumanized by these advancements, exemplified by the “modern” feeding machine. He always feels out of place, never fitting in, in the factory, in the prison, and even in the dinner/show theatre. The scene where he sings is also a final act of rebellion. Even when he actually talks in a movie, he makes sure it is not in a language that the wide gamut of his audience will understand.
There are some odd continuity issues, though. There seems to be no actual passage of time between sets. We don’t know how long Charlie spent in the prison, in the mental institution, how long he knew his girlfriend (wife? Life partner? Significant other? I don’t really know) I can’t tell if this is an intentional choice or not, however. There is also the problem of Charlie navigating through countless men desperate to get a job for their (probably) starving families, yet not making it through the dance floor.
And of course, the most important issue, which I’m sure you all noticed and were shocked about, the police cars not exhibiting the Doppler Effect. The relative frequency of the alarm should have changed as they were driving away. Cardinal sin, right there.