(I’m not a pilot) I’ve always found it curious that right in front of the seat occupant are, usually -on the big jets-, true airspeed and ground speed indications.
Do these serve ANY purpose inflight when dubious AIR DATA (Analogue) indications need cross referencing with INERTIAL REFERENCE (digital) for validation? I know they’re not going to be 1 for 1, but could serve as a gross error check of sorts?
Could this simple check have made a difference in the Air France crash that had its pitots frosted over?