Ya know,it really boils down to this.

Is it practical from our current viewpoint? No.

Is it possible from a historical study? YUP!

People have been buku prepared and died from a toothache.Others have been trapped by a rockslide,cut off their foot with a pocket knife and lived. Who is to say how it will play out?

So yeah,anything is possible and this is hardly an absolute failure of a plan,just not one I'd care to undertake.But I wouldnt bet it couldnt be done,many many many have done far tougher treks.And without a bunch of preps either.

Point was made when your life is on the line its AMAZING what can be done.