I do not believe those words (inherent & possible) are in any way mutually exclusive. They might even mean the same thing when describing a latent danger. So I do not quite understand the basis of your challenge. Also, I'm not parent poster.
So what I mean is, the autopilot could turn out to be safer than manual, in my mind, so how is it "inherently" dangerous.
It would nonetheless also be accurate to describe it as a possible danger, because the danger only manifests in certain circumstances.
> So what I mean is, the autopilot could turn out to be safer than manual, in my mind, so how is it "inherently" dangerous.
That could well be the case but I don't think it eliminates the inherent danger. Maybe it's less dangerous, but cars on the road are just kind of dangerous in general.
I think it's also very generous to assume that the early auto pilot car systems we have today are necessarily safer than human drivers. Emergency braking is almost certainly a net gain. Self driving might be or might not be. A self driving add-on cooked up by geohot? I'm doubtful it's yet gone through the kind of engineering rigor we'd expect of a system like this.
In the same way that the ocean is still inherently dangerous even if you're wearing a life jacket, or how airplanes are still inherently dangerous even though aircraft autopilot systems are effectively mainstream at this point.
Just like a piano suspended from a rope is inherently dangerous. The danger may not manifest at all for that to be the case.
Contrary to Tesla's publishing several occasions where Autopilot has possibly saved lives, there have been concrete incidents where people have died while Autopilot is being used. Tesla has backed away from these incidents with the same hand waving that NHTSA has specifically touched on here: that the user is exceeding the system's design purpose.
In this context ("at this stage"), where consumers have historically and will most likely continue to exceed these systems' design purposes and operate them outside of their intended scope, it seems very clear to me that these systems are inherently dangerous to the public. That is, there is no way to make these systems not a danger to the public in their current form.
[1] http://www.autoblog.com/2016/03/17/nhtsa-iihs-20-automakers-...
Can you expand on how they are an inherent danger, rather than a possible danger? I only challenge you because Tesla has published several occasions where Autopilot has possibly saved lives by auto-braking.