there was make a distinction between a defective part and something that's dangerous. >> that's right. >> what she wouldn't say is why it took so long for gm to fix a problem that they knew about for years. >> that's the crux of the problem. that's the big question. she says that investigators within the company and outside the company are still looking into that. what she was trying to get at is that when a company builds a pa part, they have a parameter if they fall, even if it's a little bit off, they'll consider it okay to use that part. we start to get into a lot of kn nuance here. one of the most damming parts of the testimony yesterday was the fact that gm did know there was a problem with these switches before the cars went on the