from the front page of factorio.com
so that means purple science doesnt fit in with the rest. if the automation cost of the packs shouldnt be increased and its about biter killing then combat needs more automation.About the game
Factorio is a game in which you build and maintain factories.
the way factorio is marketed and setup seems to me as ( be lazy as possible, do the least amount of work you can setting up the system to do it for you).
all other sci packs and the end game goal can be set up till its a single button press for them to complete work for you researching/ launching the rocket. yet sci pack 4 requires you to do 95% percent of the work forever.