So...
In the very first Doctor Who story, Susan states that she came up with the name TARDIS herself.
That aged well...
But it is canon in every single way. So how come all the other Time Lords refer to their ships as TARDISes as well? There is no way the show would just rewrite or ignore that line from the very beginning, is there?
I would love to know your theories on this, and if you have any other pieces of canon that have been ignored or erased?