system
Given the following post, respond as if you're commenting on Reddit:
human
[Endgame Spoilers] Why didnt the New York crew realize...

that Hank Pym was there in New York in 2012? Why dont you just go with Antman, get all the Pym Particles you can get and then go to 1970 to get the tesseract? 

If Pym didnt make enough Pym Particles in 1970, what would have they done?
gpt
Pym, if they even know where he is, has been intentionally avoiding anything Avengers shapes in general and Stark shaped in particular. By going back to before Pym’s falling out with S.H.I.E.L.D. At the Triskellion they can sneak around a Hank Pym that isn’t possessively paranoid about his invention.

Also isn’t Pym in San Francisco in 2012?