User blog comment:Matthew Paul/BioWare never made a case?/@comment-3046679-20130110160425/@comment-3543731-20130111030803

Actually the dark energy plot was foreshadowed only twice (to my knowledge) and that was in ME2 (Tali on Haestrom and Gianna Parssini on Illium). If you can find a concrete foreshadowing in ME1 then I'd like to know. As for organics vs synthetic foreshadowing: it, of course, was in ME1 with our battles with the geth. It returned in ME2 with Mordin talking about technological enhancement during your observation of Collector physiology and with the introduction of EDI and, most especially, Legion whom in himself took you on a mission to decide whether the heretic geth (who want to kill you) should die for there beliefs or be forced to conform to yours.

As for the "I heard you organics don't want to be killed by synthetics so I made synthetics to kill organics so I made synthetics to kill organics etc" bit, the Catalyst never said he was trying to protect you from synthetics; he was protecting organics in general (hence why he left the non-spacefaring races alone). What the catalyst was doing was like pruning a plant; cutting away at what he deems harmful to protect the whole. He'd rather kill organics that might create harmful synthetics then take the chance that those synthetics would wipe out all organic life entirely.

In conclusion, while both seemed like they were foreshadowed, OvsS has been much more consistent and prevalent.