I see some adverts on YouTube on channels I watch, I just jump ahead (“commonly skipped section” feature). Some I actually enjoy and don’t jump over (map men ones are typically good).
Barred by who? There is no governing body who can do such a thing, currently. As it is, nothing stops any random person or organization from creating any new format.
The Epstein drives are efficient, but not efficient enough to run for months at a time without stopping, and are thus unusable for interstellar travel. The books go into that when talking about Medina/Behemoth/Nauvoo... The whole reason it had a rotating drum was because the engines would only be active at the start and end of the journey.
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