training obviously needs to be altered to take into account that fires and buildings do not always obey the 'rules, and plans and procedures may need to change at any minute
King's Cross station fire.
Fires obey the rules of science; unfortunately our understanding of science and the situations we face is incomplete and constantly developing.
Firefighters are trained in how fire "behaves" from a scientific standpoint so that they can predict it and plan and respond safely and appropriately - without putting additional people in harm's way (whether from serious injury due to unnecessary evacuation, or pouring firefighters into a situation that kills them).
The fire at Grenfell should not have spread the way it did - which is why we need the investigation - and therefore was outside their expectations and ability to predict what it would do next and how to respond safely. Even when it started to spread, how is it you think they should have known it would fly around that building because of the cladding? Building regs are supposed to prevent that.
You're basically criticising them for lacking psychic powers.
Seriously, look up what happened in the King's Cross station fire and the response afterwards.
Before that fire there was no understanding that fires could even behave the way they did that day. We are much safer and better equipped to respond to fires because of the knowledge gained by investigating it thoroughly.
With the knowledge acquired since it would be easy to look back and criticise, but you'd be criticising them for not holding knowledge nobody had and for attempting to respond in the way that all the evidence up until that point indicated was safest and most appropriate.
This fire needs to be properly investigated and real change should follow.