I find the most interesting aspect of this observation to be the notion that we have a similar present-day blind spot and the associated exercise in predicting what is that blind spot(s).
You're correct. That's the fun part. What's especially fun is that the blind spot is often something which has already been developed, and didn't sell well in its first iteration, or is common in prototypes and SF / futurist stuff but no one thought it would ever be widely available.