Who or What are the doppelgangers?

[Wallfire]

God damn, folks! Now my goosebumps have goosebumps!

I have not seen my own doppelgänger. But several doppelgängers of other people i know very well, after those people have died. And actually talked to one of those, in a mental asylum. That was my dead aunt. Seen my dead grandma's doppelgänger, dead grandpa's one also, to mention a few...

@"guohua"  asked who or what are the doppelgängers?

No idea. Maybe a copy + paste thing in the matrix.

The last time I seen dead (brain dead) people was when I had to sort some crap out with KELA ( Finn will understand)