(I do not have the federations dlc) Is it worth it to take the Mechanist Origin along with taking Fanatic Materialist? Sure the robots are nice late game but once you snowball really hard you can't merge your robots with your synth pops (or can you and I just can't figure out how?) Because to me that's a big turn off that a big benefit of the Mechanist and Materialist trees is getting robot pops early but yet come late game or once you've snowballed you can't merge them so they're just inferior so what do you just purge them and lose all the progress you got?

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I'm not incredibly new to the game but I still have a lot to learn so any advice would be nice :)