system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] How did Yoda recognise Darth Bane's phantom, how do the Jedi even know of the Rule of Two?

Just having difficulty putting it together in my head is all.

Bane says he was the sole survivor of the Sith infighting, and from there, he reshaped the path of the Sith. But the purpose of the Rule of Two is to be secretive. If the Jedi learned there were two Sith, wouldn't they do everything in their power to track them down and eliminate them once and for all?

I was under the assumption that the Jedi assumed the Sith were extinct, was there a period of time where the Two Sith were still fighting the Jedi, and then they disappeared? Is that what happened?
gpt
A dark Jedi by the name of Kibh Jeen told them about two centuries prior to TPM. They didn’t put a whole lot of stock into what he said because they hadn’t heard from the Sith in almost a thousand years and Kibh was a gibbering lunatic. Yoda would have been a member of the Order during that time though so once Maul showed up and the Sith were confirmed to be back he probably realized Kibh was telling the truth.