## What is the biggest missed opportunity in history?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts.

I read that , a few years after Covid brought video-calling to prominence like never before. So, my question is: what is the biggest missed opportunity in history? _Quentin, Arizona_

_Post your answers (and new questions) below or send them to_ **** _A selection will be published next Sunday._

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