what he told to investigators, he should have studied it a little bit more. as we have been reporting, brooke, we know that investigators are concerned about pilots overreliance on these automated cockpit systems and today at the hearing, we just saw, still going on, they questioned an expert about how the systems work. take a listen. >> we accept the fact that pilots, as all humans, make errors. we try to make errors that can be corrected. and noticed. and lastly, at least for today, as we apply automation as a tool to aid the pilot, not replace the pilot. >> all right, so just like cruise control in a car, it does not replace the driver. and in this case, we know that the pilot thought that the automated system was preset to a specific speed. but it turns out the system was not engaged. problematic, one last thing, brooke, we spoke to a couple pilots. they say this suggested a couple