when did the Ancient's become the jedi?

[Rac80]

Exactly - all races seem to fall due to arrogence and ignoring possible threats.

That is true even in real history... look at ancient egypt, babylon , persia, ancient rome, the huns, etc..... All these people thought that those threatening them were too small to be fussed with.

[ACharmedAsgard]

Until they found out how something small and unworthy of care could do sooo much damage.

Yoda realised this before it was too late