Unless you are good at doing vector math in your head R/I is not that convenient for plotting channel response, or power system responses. Mag / phase plots are very good for showing views at a glance for wideband systems.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.