[29083011397778]

> e.g. teens know very well what the battery, wifi and signal strength indicators on their phones mean.

I will disagree with this whole-heartedly. Full bars are meaningless, and dBm is hidden (on Android at least). What we see is whatever the OEM chooses, with actual signal strength hidden away.

[fest]

Also, RSSI is typically calculated from the successfully received frames. So you can receive a comfortable -60dBm signal.. for the most of the time.