fr33stylez wrote...
How could they not? Or did they say "let's start building something and see where we end up"?
If they did know what they were building, why can't subsequent cycles decipher this from the blueprints? How can you 'add' to something when you have no idea what it is?
Another question: why didn't the original creators of the Crucible simply build something that targets the Reapers?
Here's my take on it, my understanding of the various bits of information and reading between the lines.
The Crucible was built as is.
A giant weapon to targer Reapers. A sort of EMP generator that targets specific frequencies. Maybe a Mass Effect Field Pulse generator.
However, even if they did manage to activate it, it would have had a limited range. A local cluster or system range. Not beyond. And since Reapers kill all Mass Relay travel, they can't even go system to system to trigger it.
What they are missing is a way to fire it to affect the entire galaxy all at once.
The Crucible needs... a person, or some Thing, that precipitates an event, or an agent that provokes or speeds significant change or action... Hmmm, that sounds remarkably like the [non chemical] definition of the word Catalyst. Weird, that.
Which is why it never worked, and if it did, it worked only locally.
This Cycle is the first cycle where the Reapers didn't arrive through that one agent, through that one thing that can actually precipitate the event through the entire galaxy - the Citadel.
So yeah, they knew what they were building, just didn't have a way to do it big enough, or direct enough, or immediate enough.