In the interview, Dr. Prieto's hands change positions.
In flashback scenes of the children (1970's), people in modern clothes (2000's) are seen in walking by at the park's background.
The voice of Dr. Esperanza used in the voice-over scene does not match with the voice of the actress in other scenes.
While they talk about cerebral activity, tissue footage is shown, but none of them shows neurons or other brain tissues.
Doctors treat a dead body, but they don't use any kind of basic protection (latex gloves, masks) to handle biological hazards.