My dadu, my father’s father, was bipolar: he had long periods of deep depression, when he would barely move or talk, followed by short highs when he had the irrepressible energy of a five-year-old.

The latest project? Improving AI image editors based on text prompts. In a paper published last week, researchers introduced Pico-Banana-400K, a dataset of 400,000 "text-guided" images selected to ...