Revealing mistake: When the plumber is climbing out of the very snow covered well, the snow on top never shifts - an impossibility considering the actor's size and weight. The snow on the ground moves as expected. (01:05:10)
Continuity mistake: In the beginning narrative it describes JC as graduating from top of her class at Yale. However, when having her breakdown with the plumber she says she went to Harvard.
Suggested correction: Watch the opening scene again. She graduated first in her class at Yale and got her MBA (Master of Business Administration) at Harvard. She went to both schools.
Continuity mistake: During the diaper changing scene at first we see Elizabeth not wearing anything at all. Midway through the scene she's suddenly wearing a white shirt.