:05:01
...with the Sports Almanac.
:05:04
Holy shit.
:05:05
You see, while we were in the future...
:05:07
...Biff got the sports book, stole
the time machine, went back in time...
:05:11
...and gave the book to himself
at some point in the past.
:05:15
Look. It says right here...
:05:19
...that Biff made his first $1,000,000
betting on a horserace in 1958.
:05:25
He wasn't just lucky.
:05:26
He knew, because he had
the race results in the Sports Almanac.
:05:29
That's how he made his entire fortune.
:05:33
Look at his pocket with a magnifying glass.
:05:37
The Almanac.
:05:40
Son of a bitch stole my idea.
:05:43
- He must have been listening when I....
:05:47
It's my fault.
:05:49
The whole thing is my fault.
If I hadn't bought that damn book...
:05:52
...none of this would have happened.
:05:54
-It's all in the past.
-The future.
:05:56
Whatever. It demonstrates precisely
how time travel can be misused...
:06:00
...and why the time machine
must be destroyed...
:06:03
...after we straighten all of this out.
:06:06
Right. So we go back to the future...
:06:08
...and we stop Biff
from stealing the time machine.
:06:10
We can't, because if we travel
into the future from this point in time...
:06:15
...it will be the future of this reality...
:06:19
...in which Biff is corrupt and powerful...
:06:22
...and married to your mother,
and in which...
:06:27
...this has happened to me.
:06:34
No. Our only chance to repair
the present is in the past...
:06:39
...at the point where the time line
skewed into this tangent.
:06:43
In order to put the universe back
as we remember it...
:06:47
...and get back to our reality,
we have to find out the exact date...
:06:51
...and the specific circumstances
of how, where, and when...
:06:55
...young Biff got his hands
on that "Sports Almanac."