(07-11-2016, 04:02 PM)Kilieit Wrote: I view character backstories and personalities as being subject to quantum uncertainty...Pretty much this ^^^^^
That is, until that particular fact about them has been "observed" by a third party, it is both the case and not the case.
So, as Shofie says - not a problem whatsoever until you start interacting with people. Knock yourself out.
As for after that:
I have someone I know who retcons and changes their characters on a pretty constant basis. To a point where I usually don't RP with them because it's too confusing to keep up with anything when there's no prior warning before the character is already something new.
As long as you can avoid a situation like that (though it's a somewhat extreme example) you should be fine