10 Things That Make No Sense In Doctor Who

10. Pete Avoids The Void (Doomsday)

Though Ten and Rose's separation in Doomsday is an emotional tour-de-force, the mechanics of the sequence don't really hold up if you stop and think about them.

The episode's finale revolves around "Void Stuff" (you read that in David Tennant's voice, didn't you?), a material that the Daleks and the Cybermen are saturated in, causing them to be pulled into Void when the Doctor opens it up.

Crucially though, the Doctor and Rose are also covered in Void Stuff, so they have to cling to some magnetic clamps to ensure they aren't pulled in too. This works at first, but when Rose's clamp fails, the Void sucks her in, sending her spiralling towards her death... until Pete materialises, grabs her, and whisks her away to safety.

But hang on a second. An earlier scene showed that Pete - like the Daleks and the Cybermen - is also drenched in Void Stuff, so when he materialised and snatched Rose, why wasn't he pulled in too?

Well, the answer is... there is no answer. Fans have been questioning this one for years, and though Doomsday is an effective episode overall, it is a little odd that such an important moment has this huge hole right through its centre.