Skyscraper

I'm going to start by saying it was a good idea about the skyscraper, how the producers do the design of it... But we have to be serious in some of the scene ... how can he jump from the crane to the building and then in other scen he can't jump like 7ft The little boy almost doesn't appear in all the movie... He says like 10 lines and that's it In the first scenes they try to make real the fact of breath the smoke in putting the wet towels but in the last part after being like 4 hours in that building they look like they're breathing pure oxygen like they were in a forest