[quote=@Havoccultist]
<Snipped quote by Sep>

They are machines designed by an AI who was designed by the Leviathans to find a means by which synthetics and organics could stop killing each other for good. Cause the Leviathans kept thrall races thanks to their biotics and telepathy, but these species kept making artificial life that rebelled and killed them. So ME Reapers are an attempt to solve what I like to call the AM or Skynet Dilemma. The Synthesis ending just does the following to the galaxy:

<Snipped quote>

It gives them both understanding of one another and magically fixes the whole synthetics and organics cannot understand one another problem that leads to AI uprisings, like the Reapers/Catalyst (their governing AI), who offed their Leviathan makers once they saw them as part of the problem too.
[/quote]

Throw up a sheet but from what I understand it could work