> Would certainly make life easier for time travellers.
Doesn't one of CS Lewis's books have Merlin transported to modern London and he heads off down the Roman roads?
Grid layouts do have efficiency, but humans aren't built to be efficient - at least not all the time.
The problem is suburbs and modern "inefficient" roads are designed to be inefficient - not designed by and for life.
> Doesn't one of CS Lewis's books have Merlin transported to modern London and he heads off down the Roman roads?
Persistence over time wouldn't make any difference to that case; Merlin is omniscient.
Modern England, but not London. Revived from hibernation like sleep. The book is That Hideous Strength. The last book in a trilogy and unfortunately the best IMO - and it feels very relevant and farsighted to me now.