guesteditorial continued measurement reliability is often compromised during the process of data collection. Techniques for robust measurement and analysis methods are presented in " Potential of Raman Spectroscopy for Blood-Based Biopsy. " Finally, in many situations, experimental characterization may have practical limitations. In such cases, numerical studies might be in order and might provide insight into situations that are difficult to measure practically. Several scenarios may be considered without concerns of measurement data quality or reliability. This is demonstrated in " Metasurface Near-Field Measurements with Incident Field Reconstruction Using a Single Horn Antenna, " where a numerical study is described which will inform future data collection experiments. 4 IEEE Instrumentation & Measurement Magazine February 2022