iirc, he wants to re-educate them with science and its fields. So that when the bugs come and invade the planet, the defenses he and the elite descendants have set up are prepared and ready to repel them.
I'm starting to hate this foureyed motherfucker. He leaked information to the enemy without even knowing surroundings, he boasted the MC's technology to the enemy like it's nobody's business, and he's dumb as fuck. If I was in Taiki's shoes, I will do everything in my power to tie up some loose-ends
The castle should've been on high alert and launched a point defense system. Anything or anyone that are not friendly should be taken down without any prejudice
Do these royal chefs even communicate when making food? Gordon Ramsay would've slice the head chef in half if he talks like that. Seems like chefs in the royal kitchen do have communication.