What is wrong with the producers of 7th Heaven? These boys cannot act at all!
Sam and David always talk together and ask stupid questions that have obvious answers. They are unintelligent and unaware of what's going on around them. Why did they even make these boys be born if they don't even have anything to say? Even when there is not an obvious answer, they would know that nobody knew the answer if they listened to what other people said. Like about why Mary left her family. If people knew why, they wouldn't be talking about it, they'd be helping her solve her problems!
Mackenzie Rosman (Ruthie) was about the age that Nikolas and Lorenzo are now and she was better than they are now. She was smart and curious about what was going on. The Olsen twins were better actors at age 3 than these twins are now at [almost] 7!