* docs: explain new physical plan construction
There is no code yet, but this is the rough plan.
Ref #6098.
* docs: clarify wording
Co-authored-by: Andrew Lamb <alamb@influxdata.com>
* docs: typos
Co-authored-by: Andrew Lamb <alamb@influxdata.com>
* docs: add links
* docs: extend reasoning
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Co-authored-by: Andrew Lamb <alamb@influxdata.com>