Okay, thank you. I had thought it might be that way, it just struck me as *odd* Heh.
Kind of like a caveman building the Eiffel tower because someone taught them to make an iron ingot. LOL
To research a tech in a next level you need to have a tech researched in the level before, irrespective if there are tech "gaps" in that field. So, yes, it's working as intended.
Followed an event and received 'Hyperdrive' technology. All good so far. However, it now seems I can Research a level VII 'Wormhole Stabilizer' tech, even though I have yet to complete a level IV in that same tree?
I have had this tech a few times before but never noticed the follow-on. Never had Hyperdrives at ~T120 before.