My education is as a biologist/ecologist, so some math, a good portion of chemistry, somestatistics, some physics, and for grad school, quite a bit of critical thinking. Not an engineer, but my brother is and is the TOP safety engineer for a national corporation, I have a number of friends that are engineers and other technical folks, and so, as I said, if I don't understand it, I probably know folks who can 'splain it to me. Have quite a bit of respect for engineers in general, although many design engineers clearly have never had to work on or repair the items for which they are responsible. If you are an engineer and maintain that the old all steel vehicles with hard steel interiors and nothing to prevent you from flying into said interiors or through the old style windows when the vehicle came to an abrupt halt upon encountering an immovable object were in fact safer than current models, well, perhaps time to hang up the ole slide rule. I have had enough physics, enough biology, and enough statistics to be pretty certain that I'm safer belted into a modern F150 than bouncing loose in an old F-1.