Doctor Who: 10 Things That STILL Don't Make Sense

Time Lord aging seems a little wibbly-wobbly at the best of times. How long can an individual incarnation actually live before they start developing wrinkles and a dodgy knee? Well, it depends who you ask.

In The Sound of Drums, we see the Tenth Doctor subjected to forced aging by the Master, who claims to age him about 100 years with his laser screwdriver. This initial blast really does a number on the Doctor, aging him to a visibly very old man that probably isn’t a million miles off what a 100-year-old human would look like.

On the second blast, one episode later, Ten is transformed into Gollum from The Lord of the Rings, so we can only assume that this is what a Time Lord at the end of their aging process looks like, before finally giving up the ghost and dying.

Except, when Eleven’s time came, that isn’t what happened at all.

Stranded on Trenzalore, Matt Smith’s incarnation barely ages at all in the first 100 or so years, especially compared to what 100 years did to the Tenth Doctor.

Later in the episode, we see Eleven after he’s spent 900 years on Trenzalore and is dying of old age. Naturally, we’re expecting the worst when we’re warned of this beforehand – surely this is going to be another Gollum situation? But instead, Eleven – who is literally at death's door – looks younger than 100-year-old Tennant.

Either someone messed up behind the scenes, or Eleven has Paul Rudd genes. We'll accept either explanation.