The article considers the productive capacity for wonder that resides and radiates in data, or rather in the entangled relation of data-and-researcher. Wonder is not necessarily a safe, comforting, or uncomplicatedly positive affect. It shades into curiosity, horror, fascination, disgust, and monstrosity. But the price paid for the ruin caused—to epistemic certainty or the comforts of a well-wrought coding scheme—is, after Massumi (2002, p. 19), the privilege of a headache. Not the answer to a question, but the astute crafting of a problem and a challenge: what next?