[plain talk]

There have been numerous eras that were the “most pivotal in human history” compared to their past.

There will be countless future eras that will be the “most pivotal in human history” - whatever that means.

[Paal Gulli]

"There have been numerous eras that were the “most pivotal in human history” compared to their past...."

Every era in human history is the most pivotal ... until the next one.