Letters to the Editor

19342

In your article on experimental hints of a new subatomic particle, three values are quoted for a particular charge-parity violation, all with error bar. Given the large uncertainties in two of these, the three are undistinguishable. Yet you claim that they “don’t agree.” Does no one look at error bars any more? R.A. WilliamsLos Alamos, […]

18897

It’s very appealing to think that a noninvasive test could pick up the earliest signs of cancers or cardiovascular disease. Despite passionate testimonials of how whole-body CT scanning “saved my life,” we don’t know what the tumors found really would have done. We don’t know that these patients’ lives were improved, much less saved.