system
Given the following post, respond as if you're commenting on Reddit:
human
[Warhammer 40K] The Emperor and technology

So basically the Imperium right now is a but backwards compared to the   dark age of technology right? But didn't the Emperor live through the dark age of technology? How come he doesn't remember much, or have an STC backup somewhere?
gpt
Because the Emperor is not a super genius. He doesn't have perfect memory, and he isn't all knowing. He may he the greatest psyker and one of the most brilliant minds humanity has ever produced, but not even he could do everything, be everywhere and remember every detail. He legitimately thought that humanity was in the right track, and that the influence he had put into play would carry them through. By the time things started to unravel, it was too late to salvage anything perfectly. 

He may have had an STC on standby, but it failed like all the others. The rug got pulled out from under humanity, and even He-who-would-be-the-Emperor was forced to react. He packed up what he could, and made a beeline for Earth before it was cut off.