Audio problem: Clark listens to his father and Earl talking in the hospital through the visitor window. The sound is the same volume and quality as when Earl was using the microphone, which he is not using now. Even if Clark used super-hearing to eavesdrop, it wouldn't sound the same as the microphone.

Audio problem: After he breaks the methane valve, Earl runs to the security camera and whispers, "You see what you made me do?" His whisper is heard at the proper volume by the Luthors watching the camera, but the speakerphone is on the desk ten feet behind Earl, making this impossible. Most surveillance cameras don't have microphones.

Revealing: In the early scene with the baby, there are a few overhead shots of the parents and child. It is clear that in these shots a fake baby was used - he is completely motionless, even though he was moving arms and legs before and after and is crying.

Continuity: For several shots during the early scene with the baby in the crib, the blanket changes back and forth from tucked up to the chin, up to the shoulders, and up to the stomach in different angles.

Continuity: While Earl is in the hospital bed, his grip on the microphone to the waiting room changes from up to down and back.

Audio problem: When Pete is stammering to the Kents about Clark returning to the plant, his lips don't match the sound, especially toward the end.

Audio problem: After Clark's parents come home, after their anniversary dinner, Jonathan and Clark go to see Earl in the hospital. As the Doctor says "It looks like he's got some sort of mineral poisoning, but its not from any mineral I've seen before." For the first few words of that line her mouth does not match up to what is being said but the dialogue, and her mouth slowly come together at the end of the line.

Continuity: After Clark cleans up the house, the amount and kinds of fruit in the basket on the table changes between the pan shot to his parents and the shot of the three of them at the table.

Continuity: At the beginning, as the mother tucks the blanket up to the child's neck, she changes from both hands on the infant to one hand on the crib.

Revealing: At the command center outside Martha is watching a monitor with the hostages on it and she asks "Where's Clark?". The next shot is one of Clark running down a hallway, inside the plant, using his super-speed. As he is running the red lights along the ceiling are revolving faster than they normally do and return to normal once Clark stops using super-speed.