https://edition.cnn.com/six-flags-rollercoaster-brain-injuries-invs
It isn’t the most extreme rollercoaster in existence, like people seem to be implying. At a peak of 4 G’s, that’s in the median for a rollercoaster. Meaning, there’s nothing unusual about the G-forces of the X2 and nothing out of the ordinary was found about it. There are rollercoasters that go up to 6 G’s which aren’t causing people’s brains to explode.
Isn’t it more likely the deaths are coincidences? If 4 G’s was enough to cause fatal brain bleeds, then I’d assume stunt pilots, astronauts, and fighter pilots wouldn’t exist. And you can’t train your brain *not *to bleed.
The ride was announced to be retired earlier today, as well, due to the pressure of the lawsuits: https://www.cbsnews.com/losangeles/news/six-flag-magic-mountain-x2-roller-coaster-closure/
In some circumstances 4g is deadly (human resistance to negative vertical g-force is lower than that), in other hundred of gees can be survived. G number alone says nothing.
In fact even 1g can kill you, e.g. when being suspended for a long time in inapropriate safety harness.
And it is not enough that the device is safe enough for average person. It must be safe for practically anyone that gets in. Rollercoaster users do not go the same health checks and training as fighter pilots (yes, they are trained how not to get killed by g-force).