answer was simple also for me but, during the last Sim the TRI confused me about "legal responsabilities" and told me :
1) if you evacuate "anyway", nobody will tell you did a wrong thing;
2) if you say simply the word "EVACUATE" without any mention to the side (left or right) you tranfer this responsabilies to the cabin crew and you are "legal protected".
what do you think about ?
I don't think about legalities.
I do imagine the final report
may find a contributing cause was the failure of the captain to advise the cabin crew of critical information that
might have been available.
On the other hand my own recall of history suggests that the cabin crew is more likely to know what side of the plane the fire is on simply by looking out their many windows