Figure 1A.

Example of Bayes applet. Slider panel. User has specified prior belief (upper bar) in the difference between adenosine and normal saline as normally distributed, with a mean of 7 mm Hg and a 95 percent Bayesian confidence interval from -11.11 to +25.11. The machine describes, or explains, this prior belief as “Mildly in favor of adenosine.” The data from the study provide an estimate of 17, with a sampling confidence interval of +2.67 to +31.33 (middle bar), also explained by the machine as “Mildly in favor of adenosine.” The machine then presents the calculated posterior 95 percent Bayesian confidence interval (lower bar), +7.42 to +18.88, which is still “Mildly in favor.”