Are Fitzsimmons smarter than Tony Stark?
Youngest graduates of S.H.I.E.L.D. academy ever, invented Hard Light technology around the same time that Stark did, and figured out time travel by themselves, unlike Tony Stark who did it once he got the idea of using the Quantum Realm, and they canonically did it before him. They're also two of the smartest people in the MCU 616/199999 timeline, and if you put them together, it probably beats out Tony Stark.
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I just finished the show for the first time a few weeks ago, and it easily has some amazing moments and storylines worth seeing, along with a great cast of characters that you’ll fall in love with as the seasons go on. It’s long which puts tons of ppl off, but I found comfort in having a new episode in the marvel world to watch every single night for a few months
And if you want more Coulson, you get more Coulson. Who doesn’t want more Coulson?!
One stark knew a solution existed he could make it work.
I also don't know much about how the time travel in SHIELD works. So I can't tell if they had an extent solution.
How many of the tools that Fitzsimmons use were developed by Tony? Would they be able to create hard light as soon as they did if Tony hadn't paved a path of innovation first?
The other factor is motivation. Neither group developed time travel on a whim. They did it because circumstances pushed them to. If they had swapped places, Tony might have developed it first.
I also wouldnt put at much stock into Tony using the Quantum Realm. A good inventor uses what they have. If we gave Fitzsimmons access to Scott Lang and the Quantum Realm, maybe it would speed up their research, but it also could push them into researching an option that they might develop more slowly. Maybe they just can't crack the QR as easily, and knowing about its existence makes them too focussed on that as the solution.
Even just seeing some version of FitzSimmons trying to figure out wtf is going on with multiverse/incursions, even if it’s just a montage of the multiverses smartest people, would scratch the itch.