Two directors equals two too many

This would have been a really decent, thought-provoking film if the writers/directors had the intelligence to actually -=- SPOILER ALERT-=- end it in a way that would let the poor long-suffering audience comprehend that (poor long-suffering) Evan was NOT actually going back into the past at all, ever ---- that there WERE no journals, as explained by his doctor (AND confirmed by his mother), that this was how he had been dealing -- in his MIND -- with the guilt over killing his childhood friend Kayleigh.

As the doctor said toward the end, Evan (and his father before him, who was deeply disturbed too) had created a disease that "doesn't exist." By having the film end the way it did, the writers/directors actually negated everything that came before it, thereby confusing 99% of the people who saw this convoluted mess (people who left the theatre actually believing that the past-changing scenes were real), and by doing this, they thereby created a MOVIE that doesn't actually exist. -=- END OF SPOILER.