I love the Things that are wrong in the analysis's of Doctor Who. So what better to start my own sets of lists starting with the very first Doctor Who Episode: An Unearthly child.
5
Barbara's clothes
Barbara wears cloths that are too mature for her age
4
Foreman's junkyard
You would think that Mr Foreman, would notice the addition of a policebox to his junk yard, particularly one live and humming.
3
How did Susan enrole at the school
Surely she would need proof of her identity? And a reference from her 'previous school'?
2
Susans transistor since she has no money,
she thought we were on the decimal system where we did not change for another 10 years
1
Susans radio plays in the Tardis
Most other human tech needs a Doctor upgrade before it works in the tardis, like the Brig radio, in The Three Doctors and Rose's phone in the End of the World