has it ever happened to u that u just had ur wallet opened and suddenly some BTC arrived out of nowhere?
like someone sent it to the wrong address or something?
like suddenly 0.3777 BTC are rolling in but u don't know who sent it, why it was sent and what it is all about?
~CfA~
These scenarios or situation is nearly impossible to happen but i do heard of those bitcoins that have been accidentally transferred to another wallet since the possibility of commiting mistake is there. We sometimes actually do put a wrong address sometimes or on rare cases thats why some would never expect to recieve bitcoin nowhere.