Can someone explain, in this day, how it is possible we don't know who Satoshi is? He communicated with the bitcoin community, wrote a paper,... That should h

Can someone explain, in this day, how it is possible we don't know who Satoshi is? He communicated with the bitcoin community, wrote a paper,... That should have left plenty of digital breadcrumbs to e.g. analyze writing style, see where IP adresses came from, etc...