50% Dreamed It. 25% Solved It.
Deirdre Barrett at Harvard Medical School published "The Committee of Sleep" (2001) — documenting hundreds of cases where dreams solved problems that waking minds couldn't crack.
Her controlled experiment: 66 students assigned a problem to focus on before sleep. 50% had related dreams. 25% found the solution in their dream. Dreams are more visual, less logical, but far more associative — ideal for creative breakthroughs.