“…As neurologists, we are trained in the art of accurately diagnosing and monitoring patients' disease course through an almost ritualized and time-proofed set of observations and tests, and rightly judge the exact performance of a neurological examination as one of the centerpieces that defines our profession. 15,16 Ancillary tests -imaging, electrophysiology, CSF profiling -are deemed important but not substitutive. However, these tests were not developed for use in clinical trials, and mostly do not have the required statistical performance characteristics; additionally, they are evaluated only sporadically during studies which further reduces our ability to detect the true effects of new drugs.…”