The odds were 50/50 according to the coin-toss science which you are foolishly defending.
Keep telling yourself that. The odds were 50/50 according to Mark Serreze, a polar researcher. A NASA ice rsarcher put it just under 50/50. Another researcher put it at about 1/4.
50/50 odds could have been wrong, but the fact that it didn't happen doesn't mean the odds were wrong.
I'm not actually defending the odds. If you understood some basics about probability besides a coin flip you might have grasped that.