The most famous of the companion deaths from classic Who, Adric was an intergalactic maths nerd who hung out with the Fourth and Fifth Doctors and once made a deeply unsuccessful pass at Ace, who threatened to kneecap him, in the comic Time & Time Again. Adric met his end in the Fifth Doctor story Earthshock, during which he was in an escape pod hurtling toward Earth, which the Doctor realises is actually the meteorite which wiped out the dinosaurs. Its a pretty crucial juncture in the story of humanity, in short. So, Adric attempts to save Earth by changing the crafts trajectory, despite the fact that he could completely ruin human evolution in doing so. Nice one Adric. Fortunately, a Cyberman mushed up the flight controls before he could do so. That said, its narratively dim to have a character launch themselves into the line of fire for no apparent reason, not to mention needlessly distressing for a viewer to have to stare at the lifeless body of a beloved character and, figuratively speaking, ask it: Why on earth did you do that, you massive idiot? Fortunately nobody really did that with Adric, as he was a bit too earnest and moany, and because he dressed like hed wandered in from the set of Blakes 7. Anyroad, people actually like Clara, so having her cut down in her prime for absolutely no reason doesn't seem particularly likely.
