Discusses studies on the use of aspirin in preventing stroke. `Aspirin in ischemic cerebrovascular disease: How strong is the case for a different dosing regimen?,' by C. Patrono and G.J. Roth Azar; `Aspirin wars: The optimal dose of aspirin to prevent stroke,' by R.G. Hart and M.J.G. Harrison; `Aspirin dose in stroke prevention: Beautiful hypotheses slain by ugly facts,' by H.J.M. Barnett, M. Kaste, et al.