This is interesting.
When Steven Moffat wrote the Doctor Who Comic Relief Special, starring Rowan Atkinson, he had a half-good idea. But what’s nice is that he then went on to develop that into a very good idea, and used it in the finale of his first series of Matt Smith’s Doctor.
It’s always worth sticking with an idea if you sense it’s right, because one day, you’ll nail it.
(I can’t embed the video on here sorry, so you’ll have to watch it here)
None of this will make sense unless you’ve seen The Big Bang.