Can you see the future in the Lighthouse Mirror too?
If this were true for Jacob at least then he was able to look in the mirror and see what was to come up until a certain point in time ... like if the mirror looked out on a certain range of years like 1970 - 2000 and way back years ago Jacob looked into the future and saw the lives of people they way they would have been if he did not touch them ... he looked for pivotal times in their lives to come and went out and nudged them ... something like that ... and he came back and looked at the future after he touched them.
I know he knew he was going to die and he knew where he was going to be when he died ... he knew this 150 years ago.