I was expecting more of this film based on the title and the trailer but ultimately came away feeling a bit taken for a ride. I read Sci Fi, I understand some of the time travel stuff they write so would like to add some thoughts.
To begin the whole process the ferry must blow up and he must travel back in time at least twice. The script writers get lazy in adding the ambulance and the stuff at the flat in the wrong time loop. They are compressing the two time loops into one time loop and using some of the elements to explain stuff that is logically wrong. Why two time loops and why is the film wrong? because the dead girl and the stuff at the flat and the ambulance all exist in the same time stream in the film. Why is this a problem: she must have been alive to help put it in the flat which he finds before he time travels but her dead body is in the morgue, so where was this other alive version of the girl in his current time stream???? She can't be the same girl in the river with fingers missing as that should already have happened. Now there are two of him at the end, but only because he time travelled, she never did, so there can only ever be one of her in any one time stream or loop at any one time. He saved her with the ambulance therefore its in the wrong time stream loop if she is also dead in the same time loop, so there must be two time loops, one where she is dead and one where she is alive. (now some might try to get round this by saying she was killed after going to the flat with Denzel and then placed in the river, but I don't think the timing and the positioning of the bomber will support that very well, and of course that didn't happen in the film)
The whole sequence would make more sense if it went like this. start: A note arrives from the future on his desk, his partner gets it. His partner disrupts the bomber, gets shot. Bomber can no longer use the car. This makes the bomber go for the girl and her car. The car is changed the girl dies at the hand of the bomber she ends up in the river and found later but too early for the ferry explosion. There should be no traces at the flat. There should be no ambulance at the bombers place. Science team get him on board, he starts the investigation, he sends the note into the past
Loop 1 He travels back in time. He gets the ambulance. He saves the girl from the first death. They go back to her flat, he arranges the letters and leaves the blood etc. Bomber still rides across the bridge (very very important for the logic) They try and save the ferry they fail (and die) The ferry blows up (again).
Logically this should have happened to have all the elements available at the start of the film to travel back a second time, where everything in the past is in place, so he can now see all of those things in the past that he put there and changed. So the time travel trip shown in the film should actually be the start of the movie (as it fits all the requirements for the first time loop) not the one leading to the shown ending which should logically be the end of the second time loop and the continuation of the time stream and exit from the time loop that could potentially go on for ever if the ferry keeps blowing up.
NB Bomber riding across the bridge: In reality if he had succeeded in stopping the ferry from blowing up as shown in the movie he would not have been able to see the bomber ride across the bridge on the CCTV(future part) as he was changing the past in real time, eg Bomber is now on the ferry. (remember the two are linked in real time, they said so). The ambulance, bandages at the flat, phone call etc must exist in the same loop as the bomber riding across the bridge.
To begin the whole process the ferry must blow up and he must travel back in time at least twice. The script writers get lazy in adding the ambulance and the stuff at the flat in the wrong time loop. They are compressing the two time loops into one time loop and using some of the elements to explain stuff that is logically wrong. Why two time loops and why is the film wrong? because the dead girl and the stuff at the flat and the ambulance all exist in the same time stream in the film. Why is this a problem: she must have been alive to help put it in the flat which he finds before he time travels but her dead body is in the morgue, so where was this other alive version of the girl in his current time stream???? She can't be the same girl in the river with fingers missing as that should already have happened. Now there are two of him at the end, but only because he time travelled, she never did, so there can only ever be one of her in any one time stream or loop at any one time. He saved her with the ambulance therefore its in the wrong time stream loop if she is also dead in the same time loop, so there must be two time loops, one where she is dead and one where she is alive. (now some might try to get round this by saying she was killed after going to the flat with Denzel and then placed in the river, but I don't think the timing and the positioning of the bomber will support that very well, and of course that didn't happen in the film)
The whole sequence would make more sense if it went like this. start: A note arrives from the future on his desk, his partner gets it. His partner disrupts the bomber, gets shot. Bomber can no longer use the car. This makes the bomber go for the girl and her car. The car is changed the girl dies at the hand of the bomber she ends up in the river and found later but too early for the ferry explosion. There should be no traces at the flat. There should be no ambulance at the bombers place. Science team get him on board, he starts the investigation, he sends the note into the past
Loop 1 He travels back in time. He gets the ambulance. He saves the girl from the first death. They go back to her flat, he arranges the letters and leaves the blood etc. Bomber still rides across the bridge (very very important for the logic) They try and save the ferry they fail (and die) The ferry blows up (again).
Logically this should have happened to have all the elements available at the start of the film to travel back a second time, where everything in the past is in place, so he can now see all of those things in the past that he put there and changed. So the time travel trip shown in the film should actually be the start of the movie (as it fits all the requirements for the first time loop) not the one leading to the shown ending which should logically be the end of the second time loop and the continuation of the time stream and exit from the time loop that could potentially go on for ever if the ferry keeps blowing up.
NB Bomber riding across the bridge: In reality if he had succeeded in stopping the ferry from blowing up as shown in the movie he would not have been able to see the bomber ride across the bridge on the CCTV(future part) as he was changing the past in real time, eg Bomber is now on the ferry. (remember the two are linked in real time, they said so). The ambulance, bandages at the flat, phone call etc must exist in the same loop as the bomber riding across the bridge.