To anyone who watches the U.S. version of "Shameless" -- have you noticed something odd about Liam?

At the beginning of Season 1, Liam was barely a toddler. At least a couple of years have passed, however, so Liam’s now much older.

Have you noticed that Liam doesn’t talk? He looks maybe age 3 or 4, but he’s never said a single thing.

Should we be getting clues that Liam’s developmentally challenged? If yes, that could lead to an interesting look at poverty in America; Liam will need some expensive help, which the Gallaghers can’t afford and, thus, won’t be able to access.

My husband thinks I’m reading too much into all this. He says it’s more likely that the twins chosen to play Liam turned out to lack acting skills—they can’t take cues or recite dialogue—so Liam remains silent.

Thoughts?