Final answer:
In Ray Bradbury's 'The Veldt', George and Lydia made critical parenting errors, notably poor communication and over-reliance on technology, which led to significant behavioral issues in their children.
Step-by-step explanation:
George and Lydia, characters from Ray Bradbury's The Veldt, made several mistakes in raising their children. These mistakes include failing to communicate with their children about important issues and not setting appropriate boundaries with technology. Instead of engaging in healthy family interactions, they relied heavily on a technologically advanced nursery to entertain and manage their children. This overindulgence in technology led to a lack of empathy, distorted reality, and eventually, rebellion from the children. The depiction of the parents' permissiveness and detachment raises questions about the consequences of excessive reliance on technology for parenting, and the importance of active and direct involvement in children's lives.