Instead, this science was a way for me to challenge myself, to do something truly hard, and in so doing to work through all of my misunderstandings about his addiction and all of my shame. Because I still have so much shame. I’m full to the brim with it; I’m spilling over. I can look at my data again and again. I can look at scan after scan of drug-addicted brains shot through with holes, Swiss-cheesed, atrophied, irreparable. I can watch that blue light flash through the brain of a mouse and note the behavioral changes that take place because of it, and know how many years of difficult,
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