Ecto-science
So lets talk about the elephant in the room.
Ecto-science.
Im very curious as to why people call it a fake science. Jack, Maddie and Vlad took College chlasses about it, granted they could have been about engenering or something (been a while since i watched the show) but they have Ectoplasme around, they have old designes of weapons and armors, they know about its properties and how to protect themselfs from it.
So why the hell are they the 'only' ecto scientists that exist? there should be boatloads of them and practicly run down their door once they get the portal working.
Think about it! Some weird randos from your parallel class suddly invents the holy grale or find the cure for cancer and what do they do with it? nothing. You could bet your ass that irl Amity would be overrun by ecto scientist.