RSRH: Do you mean to infer that the sages of previous generations have not fulfilled the ultimate “Shleimus” in their lives since they were lacking in their knowledge of the “full truth” which is known in our times?
Yes, God gave the intellectual capability to mankind to discover all the scientific knowledge which has been recently discovered [and I believe it was Divine providence that it be discovered in our times], however God did not state in the Torah that in order for us to reach full “Shleimus” we need to use our minds to discover the full scientific truth of the universe.