A Goodreads user
A Goodreads user asked Blake Crouch:

My husband and I both loved Dark Matter! Thank you so much for writing it. Did you do much research beforehand? During the writing process? If so, what was something you learned that you didn't know before finishing the book?

Blake Crouch Only about 10 years of research :)
I continued researching during the writing process.
Something I learned before finishing the book.... a physicist has, in the past decade, put an object visible to the human eye in a state of quantum superposition (multiple realities).

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