Deliberate mistake: When Clark is chasing Emily at light speed, Clark decides to use heat vision to knock the water tower down. The water tower shouldn't have had enough time to fall down and intercept Emily, seeing as she's travelling too fast.
Smallville (2001)
1 deliberate mistake in season 3 - chronological order
More mistakes in Smallville
Jonathan Kent: Are you okay?
Clark Kent: Can I answer that in about five years?
Jonathan Kent: Yeah.
Clark Kent: Dad I'm glad you and mom are the ones that found me.
Jonathan Kent: We didn't find you, Clark, you found us.
More trivia for Smallville
Question: How realistic is Lana's physical therapy scene? She says she broke her leg in 4 places and hasn't walked in a month. She's seen struggling to walk using the metal bars to support herself, which Adam seems to suggest she could do "another lap" but that she quit. But then after struggling to walk, she's given her crutches and the therapist leaves, leaving her to walk on her own with crutches. If she struggled with the bars, could she use crutches? Or would she be in a wheelchair?