"Problem is we won't be able to show it to anybody."
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Bttf marty doc remote

"Only if it turns out that reality is actually nothing more than a holographic illusion created by the interplay of subatomic particles on a vast two-dimensional membrane."

This article covers a subject that has been deemed non-canon by either the author or the Back to the Future licensees, and thus should not be taken as a part of the "real" Back to the Future universe.

"Let's see.. is mass equals i times z, and E equals the square root of z times c squared, and the flux dispersal rate is inversely proportional to the fourth root of n.. carry the nine, then.."
—Doc reads out of his notebook.

Dr. Emmett Brown's notebook was a book for writing in, which has been in his possession ever since.


The notebook documented thirty years of scientific breakthroughs in building a working time machine. Doc referred to it when the DeLorean time machine did not reappear one minute after temporal displacement. He noted that if the book fell into the wrong hands, the effects could be catastrophic.

Marty McFly later found the notebook hidden inside the scaled down Hill Valley Courthouse on Doc's 1955 demonstration model, and had to outsmart Biff Tannen in order to obtain it.

Inside the notebook were schematic diagrams, circuit diagrams, equations, and notes to himself, particularly for October 26, 1985, in which he had to wear a bulletproof vest, walk Einstein before the time experiment, check the time circuits for stickiness, and remind Marty to bring a camera — i.e. the JVC camcorder.

In 1986G, the notebook was nearly blank, due to the ripple effects catching up with it. The picture of the flux capacitor, however, was still intact on one page and inspired Citizen Brown enough to be able to repair the DeLorean.